Spectrum Math

This handy Spectrum Math Grade 7 Answer Key Chapter 1 Lesson 1.3 Subtraction as an Inverse Operation provides detailed answers for the workbook questions.

Spectrum Math Grade 7 Chapter 1 Lesson 1.3 Subtraction as an Inverse Operation Answers Key

Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.
7 – 4 = 7 + (-4)

Write an equivalent equation using the additive inverse.

Question 1.
a. 8 – 3 = ____
Answer: 5
8 – 3 = 8 + (-3) = 5
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 9 – 2 = _____
Answer: 7
9 – 2 = 9 + (-2) = 7
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 2.
a. 12 + (-7) = ____
Answer: 5
12 + (-7) = 12 – 7 = 5
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 8 + (-12) = ____
Answer: -4
8 + (-12) = 8 – 12 = -4
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 3.
a. 52 – 13 = ____
Answer: 39
52 – 13 = 52 + (-13) = 39
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 23 – 10 = ____
Answer: 13
23 – 10 = 23 + (-10) = 13
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 4.
a. 67 + (-11) = ____
Answer: 56
67 + (-11) = 67 – 11 = 56
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 45 + (-6) = ____
Answer: 39
45 + (-6) = 45 – 6 = 39
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 5.
a. 30 – 15 = ____
Answer: 15
30 – 15 = 30 + (-15) = 15
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 74 – 23 = ____
Answer: 51
74 – 23 = 74 + (-23) = 51
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 6.
a. 3 + (-56) = ____
Answer: -53
3 + (-56) = 3 – 56 = -53
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 62 + (-32) = ____
Answer: 30
62 + (-32) = 62 – 32 = 30
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 7.
a. 87 – 85 = ____
Answer: 2
87 – 85 = 87 + (-85) = 2
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 54 – 20 = _____
Answer: 34
54 – 20 = 54 + (-20) = 34
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 8.
50 + (-17) = ____
Answer: 33
50 + (-17) = 50 – 17 = 33
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 41 + (-12) = ____
Answer: 29
41 + (-12) = 41 – 12 = 29
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 9.
a. 89 – 57 = ____
Answer: 32
89 – 57 = 89 + (-57) = 32
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 46 – 40 = _____
Answer: 6
46 – 40 = 46 + (-40) = 6
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 10.
a. 96 + (-20) = ____
Answer: 76
96 + (-20) = 96 – 20 = 76
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 94 + (-90) = ____
Answer: 4
94 + (-90) = 94 – 90 = 4
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 11.
a. 83 – 67 = ____
Answer: 16
83 – 67 = 83 +  (-67) = 16
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 98 – 34 = ____
Answer: 64
98 – 34 = 98 + (-34) = 64
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

Question 12.
a. – 76 + (-20) = ____
Answer: -96
– 76 + (-20) = – 76 – 20 = -96
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

b. 90 + (-76) = _________
Answer: 14
90 + (-76) = 90 – 76 = 14
Subtraction is the same as the process of adding the additive inverse, or opposite, of a number to another number.

This handy Spectrum Math Grade 7 Answer Key Chapter 1 Lesson 1.2 Absolute Values and Integers provides detailed answers for the workbook questions.

Spectrum Math Grade 7 Chapter 1 Lesson 1.2 Absolute Values and Integers Answers Key

The absolute value of a number is the distance between 0 and the number on a number line. Remember that distance is always a positive quantity (or zero). Absolute value is shown by vertical bars on each side of the number.

Evaluate the expressions below.

Question 1.
a. |91| = _____
Answer: 91
|91| = 91
-91 and 91 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |-19| = _____
Answer: 19
|-19| = 19
-19 and 19 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |-9| = _____
Answer: 9
|-9| = 9
-9 and 9 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 2.
a. |1| = _____
Answer: 1
|1| = 1
-1 and 1 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |-199| = _____
Answer: 199
|-199| = 199
-199 and 199 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |0| = _____
Answer:0
|0| = 0
The absolute value of 0 is itself 0.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 3.
a. |-762| = _____
Answer: 762
|-762| = 762
-762 and 762 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |78| = _____
Answer: 78
|78| = 78
-78 and 78 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |-302| = _____
Answer: 302
|-302| = 302
-302 and 302 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 4.
a. |-4002| = _____
Answer: 4002
|-4002| = 4002
-4002 and 4002 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. -|668| = _____
Answer: 668
|-668| = 668
-668 and 668 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. -|-8701| = _____
Answer: 8701
|-8701| = 8701
-8701 and 8701 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 5.
a. |23| = _____
Answer: 23
|23| = 23
-23 and 23 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |-56| = _____
Answer: 56
|-56| = 56
-56 and 56 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. -|432| = _____
Answer: -432
-|432| = -432
-432 and 432 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 6.
a. |-53| = _____
Answer:53
|-53| = 53
-53 and 53 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |694| = _____
Answer: 694
|694| = 694
-694 and 694 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. -|-274| = _____
Answer: -274
-|-274| = -274
-274 and 274 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 7.
a. |-516| = _____
Answer: 516
|-516| = 516
-516 and 516 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |883| = _____
Answer: 883
|883| = 883
-883 and 883 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. -|637| = _____
Answer: -637
-|637| = -637
-637 and 637 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 8.
a. |413| = _____
Answer: 413
|413| = 413
-413 and 413 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |-590| = _____
Answer: 590
|-590| = 590
-590 and 590 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |739| = _____
Answer: 739
|739| = 739
-739 and 739 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 9.
a. |-281| = _____
Answer: 281
|-281| = 281
-281 and 281 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |40| = _____
Answer: 40
|40| = 40
-40 and 40 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. -|-826| = _____
Answer: -826
-|-826| = -826
-826 and 826 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 10.
a. |206| = ____
Answer: 206
|206| = 206
-206 and 206 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |372| = _____
Answer: 372
|372| = 372
-372 and 372 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |973| = ____
Answer: 973
|973| = 973
-973 and 973 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 11.
a. -|533| = ____
Answer: -533
-|533| = -533
-533 and 533 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. |-836| = ____
Answer: 836
|-836| = 836
-836 and 836 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |954| = ____
Answer: 954
|954| = 954
-954 and 954 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 12.
a. |-344| = ____
Answer: 344
|-344| = 344
-344 and 344 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. -|-711| = _____
Answer: -711
-|-711| = -711
-711 and 711 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. |-219| = _____
Answer: 219
|-219| = 219
-219 and 219 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

This handy Spectrum Math Grade 7 Answer Key Chapter 1 Lesson 1.1 Understanding Absolute Value provides detailed answers for the workbook questions.

Spectrum Math Grade 7 Chapter 1 Lesson 1.1 Understanding Absolute Value Answers Key

The absolute value of a number is a number that is the same distance from zero on a number line as the given number, but on the opposite side of zero.

-8 and 8 are absolute value because they are the same distance from zero on opposite sides of the number line.

Evaluate the expressions below.

Question 1.
a. opposite of 19 _______
Answer: -19
opposite of 19 is -19
-19 and 19 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -7 ____
Answer: 7
opposite of -7 is 7
-7 and 7 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -2 _____
Answer: 2
opposite of -2 is 2
-2 and 2 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 2.
a. opposite of 28 ____
Answer: -28
opposite of 28 is -28
-28 and 28 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -50 ____
Answer: 50
opposite of -50 is 50
-50 and 50 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of 10 _____
Answer: -10
opposite of 10 is -10
-10 and 10 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 3.
a. opposite of 92 _____
Answer: -92
opposite of 92 is -92
-92 and 92 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -31 ____
Answer: 31
opposite of -31 is 31
-31 and 31 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -74 ____
Answer: 74
opposite of -74 is 74
-74 and 74 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 4.
a. opposite of 936 ____
Answer: -936
opposite of 936 is -936
-936 and 936 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of 76 ____
Answer: -76
opposite of 76 is -76
-76 and 76 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of 65 ____
Answer: -65
opposite of 65 is -65
-65 and 65 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 5.
a. opposite of -32 ____
Answer: 32
opposite of -32 is 32
-32 and 32 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -36 ____
Answer: 36
opposite of -36 is 36
-36 and 36 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of 73 _____
Answer: -73
opposite of 73 is -73
-73 and 73 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 6.
a. opposite of 55 ____
Answer: -55
opposite of 55 is -55
-55 and 55 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -47 ____
Answer: 47
opposite of -47 is 47
-47 and 47 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of 87 ____
Answer: -87
opposite of 87 is -87
-87 and 87 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 7.
a. opposite of -61 ____
Answer: 61
opposite of -61 is 61
-61 and 61 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of 37 ____
Answer: -37
opposite of 37 is -37
-37 and 37 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -23 ____
Answer: 23
opposite of -23 is 23
-23 and 23 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 8.
a. opposite of 25 ____
Answer: -25
opposite of 25 is -25
-25 and 25 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of 68 ____
Answer: -68
opposite of 68 is -68
-68 and 68 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -53 _____
Answer: 53
opposite of -53 is 53
-53 and 53 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 9.
a. opposite of 71 _____
Answer: -71
opposite of 71 is -71
-71 and 71 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -99 ____
Answer: 99
opposite of 99 is -99
-99 and 99 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of 90 ______
Answer: -90
opposite of 90 is -90
-90 and 90 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 10.
a. opposite of 40 ____
Answer: -40
opposite of 40 is -40
-40 and 40 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of 44 ____
Answer: -44
opposite of 44 is -44
-44 and 44 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -77 _____
Answer: 77
opposite of -77 is 77
-77 and 77 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 11.
a. opposite of -52 ____
Answer: 52
opposite of -52 is 52
-52 and 52 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of 66 ____
Answer: -66
opposite of -66 is 66
-66 and 66 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -95 ____
Answer: 95
opposite of -95 is 95
-95 and 95 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Question 12.
a. opposite of 15 ____
Answer: -15
opposite of 15 is -15
-15 and 15 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

b. opposite of -20 ____
Answer: 20
opposite of -20 is 20
-20 and 20 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

c. opposite of -9 _____
Answer: 9
opposite of -9 is 9
-9 and 9 are absolute value because they are the same distance from zero on opposite sides of the number line.
Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Pretest and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Pretest Answers Key

Check What You Know

Understanding and Using Numbers

Write odd or even.

_________
Answer:

Explanation:
The total number of squares given is eight. Any number which is divisible by two is called an even number. The number eight is divisible by two and so the number of squares given are even.

_________
Answer:

Explanation:
The total number of triangles given is five. Any number which is not divisible by two is called an odd number. The number five is not divisible by two and so the number of triangles given are odd.

_________
Answer:

Explanation:
The total number of fish given is three. Any number which is not divisible by two is called an odd number. The number three is not divisible by two and so the number of fish given are odd.

_________
Answer:

Explanation:
The total number of ducks given is four. Any number which is divisible by two is called an even number. The number four is divisible by two and so the number of ducks given are even.

Write an equation to match the array.

_____ + _____ + _____ = ______
Answer:

Explanation:
The total number of base balls given in the first, second and third lines are respectively four each. To match the array, we need to add number of base balls in all rows which is equal to the total number of base balls given. The total number of base balls given are 12.

____ + ____ = _____
Answer:

Explanation:
The total number of stars given in the first and second lines are respectively five each. To match the array, we need to add number of stars in all rows which is equal to the total number of stars given. The total number of stars given are 10.

Write an equation to match the array.

____ + ____ + ____ + ____ = _____
Answer:

Explanation:
The total number of squares given in the first, second, third and fourth lines are respectively four each. To match the array, we need to add number of squares in all rows which is equal to the total number of squares given. The total number of squares given are 16.

____ + ____ + ____ =____
Answer:

Explanation:
The total number of apples given in the first line is three. To match the array, we need to add number of apples in the row which is equal to the total number of apples given. The total number of apples given are 3.

Count by 10.

10, ____, ___, 40, ____, _____
Answer:

Explanation:
First coin is given as 10. If we count by 10, then a 10 should be added to the first coin score to get the second coin which means 10+10=20. Similarly, for the third coin, we need to add one more 10 to the second coin score which means 20+10=30. It was given that the score of fourth coin is 40 which is expected. Now, for the fifth coin, we need to add 10 more to the score of fourth coin which means 40+10=50. In the same way, the score of sixth coin will be 50+10=60.

Count by 5.

5, ____, 15, _____, ____, _______
Answer:

Explanation:
First image is given as 5. If we count by 5, then a 5 should be added to the first image score to get the second image which means 5 + 5 =10. It was given that the score of third image is 15 which is expected. Similarly, for the fourth image, we need to add one more 5 to the third image score which means 15 + 5 = 20.  Now, for the fifth image, we need to add 5 more to the score of fourth image which means 20 + 5 = 25. In the same way, the score of sixth image will be 25 + 5 = 30.

Count by 2. Write the missing numbers.

20, 22, ____, ____, 28, ___, ____, _____, 36
Answer:
20, 22, 24, 26, 28, 30, 32, 34, 36
Explanation:
The difference between the first and second number is 2. So, the third number is increased by 2 which means 22 + 2 = 24. The missing numbers in the given sequence are 24, 26, 30, 32, 34.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Posttest and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Posttest Answers Key

Understanding and Using Numbers

Count by 2.

2, ____, ___, 8, ___, _____
Answer:

Explanation:
First number is given as 2. If we count by 2, then a 2 should be added to the first number to get the second number which means 2 + 2 = 4. Similarly, for the third number, we need to add one more 2 to the second number which means 4 + 2 = 6. It was given that fourth number is 8 which is expected. Now, for the fifth number, we need to add 2 more to the fourth number which means 8 + 2 = 10. In the same way, the sixth number will be 10 + 2 = 12.

Count by 5.

5, ____, ___, 20, ____, ____
Answer:

Explanation:
First coin is given as 5. If we count by 5, then a 5 should be added to the first coin score to get the second coin which means 5 + 5 = 10. Similarly, for the third coin, we need to add one more 5 to the second coin score which means 10 + 5 = 15. It was given that the score of fourth coin is 20 which is expected. Now, for the fifth coin, we need to add 5 more to the score of fourth coin which means 20 + 5 = 25. In the same way, the score of sixth coin will be 25 + 5 = 30.

Count by 10.
30, ___, ___, ___,70, 80, ____
Answer:
30, 40, 50, 60, 70, 80, 90
Explanation:
First number is given as 30. If we count by 10, then a 10 should be added to the first number to get the second number which means 30 + 10 = 40. Similarly, for the third number, we need to add one more 10 to the second number which means 40 + 10 = 50. Now, for the fourth number, we need to add 10 more to the third number which means 50 + 10 = 60. It was given that fifth and sixth numbers are 70, 80 which is expected. In the same way, the seventh number will be 80 + 10 = 90.

Write an equation to match each array.

___ + ____ + ____ + ____ + ___ = ____
Answer:

Explanation:
The total number of objects given in the first, second, third, fourth and fifth lines are respectively five each. To match the array, we need to add number of objects in all rows which is equal to the total number of objects given. The total number of objects given are 25.

____ + ____ = _____
Answer:

Explanation:
The total number of Teddybear’s given in the first, and second lines are respectively three each. To match the array, we need to add number of Teddybear’s in all rows which is equal to the total number of teddy bears given. The total number of teddy bears given are 6.

Write an equation to match each array.

___ + ____ + ____ + ____ = _____

Answer:

Explanation:
The total number of books given in the first, second, third and fourth lines are respectively five each. To match the array, we need to add number of books in all rows which is equal to the total number of books given. The total number of books given are 20.

____ + ____ + ____ = ____
Answer:

Explanation:
The total number of fish given in the first, second and third lines are respectively five each. To match the array, we need to add number of fish in all rows which is equal to the total number of fish given. The total number of fish given are 15.

Tell how many. Label odd or even. Write an equation.

____ green circles
_______
____ + ____ = _____
Answer:
9 green circles
Odd
9 + 0 = 9
Explanation:
The total number of green circles are nine. Any number which is not divisible by two is called an odd number. The number nine is not divisible by two and so the number of green circles given are odd. The equation is written as 9 + 0 = 9.

_____ yellow stars
_________
____ + ____ = ____
Answer:
10 yellow stars
Even
10 + 0 = 10
Explanation:
The total number of yellow stars are ten. Any number which is divisible by two is called an even number. The number ten is divisible by two and so the number of yellow stars given are even. The equation is written as 10 + 0 = 10.

____ purple triangle
______
____ + ____ = ____
Answer:
1 purple triangle
Odd
1 + 0 = 1
Explanation:
The total number of purple triangles is one. Any number which is not divisible by two is called an odd number. The number one is not divisible by two and so the number of purple triangles given are odd. The equation is written as 1 + 0 = 1.

____ orange hexagons
_______
____ + ____ = ____
Answer:
5 orange hexagons
Odd
5 + 0 = 5
Explanation:
The total number of orange hexagons are five. Any number which is not divisible by two is called an odd number. The number five is not divisible by two and so the number of orange hexagons given are odd. The equation is written as 5 + 0 = 5.

____ red squares
______
_____ + ____ = _____
Answer:
6 red squares
Even
6 + 0 = 6
Explanation:
The total number of red squares are six. Any number which is divisible by two is called an even number. The number six is divisible by two and so the number of red squares given are even. The equation is written as 6 + 0 = 6.

____ teddy bears
______
____ + ____ = ______
Answer:
4 teddy bears
Even
4 + 0 = 4
Explanation:
The total number of teddy bears are four. Any number which is divisible by two is called an even number. The number four is divisible by two and so the number of teddy bears given are even. The equation is written as 4 + 0 = 4.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Lesson 1.4 Odd or Even? and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Lesson 1.4 Odd or Even? Answers Key

Answer:
The total number of ducks given is six. Any number which is divisible by two is called an even number. The number six is divisible by two and so the number of ducks given are even.

Answer:
2 + 1 = 3
Explanation:
The total number of cats given is three. Any number which is not divisible by two is called an odd number. The number three is not divisible by two and so the number of cats given are odd.

Answer:
3 + 1 + 3 = 7
Explanation:
The total number of dogs given is seven. Any number which is not divisible by two is called an odd number. The number seven is not divisible by two and so the number of dogs given are odd.

Answer:
The total number of fish given is two. Any number which is divisible by two is called an even number. The number two is divisible by two and so the number of fish given are even.

How many fish? 8
Odd or even? even
4 + 4 = 8
Answer:
The total number of fish are eight. Any number which is divisible by two is called an even number. The number eight is divisible by two and so the number of fish given are even. The equation is written as 4 + 4 = 8.

How many birds? _____
Odd or even? _____
Answer:
How many birds? 5
Odd or even? Odd
2 + 3 = 5
Explanation:
The total number of birds are five. Any number which is not divisible by two is called an odd number. The number five is not divisible by two and so the number of birds given are odd. The equation is written as 2 + 3 = 5.

Circle the groups that are add.

Answer:

Explanation:
Drawn a circle for the odd number of groups as we can observe in the above image.

Tell how many. Label odd or even. Write an equation.

Explanation:
The total number of dolls are eight. Any number which is divisible by two is called an even number. The number eight is divisible by two and so the number of dolls given are even. The equation is written as 4 + 4 = 8.

____ cars ____
____ + ____ = ____
Answer:
3 cars odd
3 + 0 = 3
Explanation:
The total number of cars are three. Any number which is not divisible by two is called an odd number. The number three is not divisible by two and so the number of cars given are odd. The equation is written as 3 + 0 = 3.

____ jets _____
____ + ____ = _____
Answer:
7 jets odd
4 + 3 = 7
Explanation:
The total number of jets are seven. Any number which is not divisible by two is called an odd number. The number seven is not divisible by two and so the number of jets given are odd. The equation is written as 4 + 3 = 7.

____ bears _____
____ + ____ = _____
Answer:
6 bears Even
3 + 3 = 6
Explanation:
The total number of teddy bears are six. Any number which is divisible by two is called an even number. The number six is divisible by two and so the number of teddy bears given are even. The equation is written as 3 + 3 = 6.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Lesson 1.3 Skip Counting with Money and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Lesson 1.3 Skip Counting with Money Answers Key

Count pennies by 2. Write the missing numbers.

Answer:

Explanation:
The difference between the first and second pennies is 2⊄ also second and third pennies is 2⊄. So, the fourth pennies are increased by 8⊄ which means 6⊄ + 2⊄ =8⊄. The missing numbers in the given sequence are 8⊄, 10⊄, 12⊄.

Count by 2. Start at 80⊄. Write the missing numbers.

Answer:

Explanation:
First coin score is given as 80⊄. It was given that the score of second coin is 82⊄ which is expected. If we count by 2⊄, then a 2⊄ should be added to the second coin score to get the third coin which means 82⊄ +2⊄ =84⊄. It was given that the score of fourth coin is 86⊄ which is expected. Now, for the fifth coin, we need to add 2⊄ more to the score of fourth coin which means 86⊄ +2⊄ = 88⊄. In the same way, the score of sixth coin will be 88⊄ + 2⊄ = 90⊄. The missing numbers are 88⊄, 90⊄.

Count by 5. Write the missing numbers.

Answer:

Explanation:
First coin score is given as 5⊄. If we count by 5⊄, then a 5⊄ should be added to the first coin score to get the second coin which means 5⊄ + 5⊄ = 10⊄. It was given that the score of third coin is 15⊄ which is expected. Similarly, for the fourth coin, we need to add one more 5⊄ to the third coin score which means 15⊄ + 5⊄ = 20⊄. It was given that the score of fifth coin is 25⊄ which is expected. In the same way, the score of sixth coin will be 25⊄ + 5⊄ = 30⊄. The missing numbers are 20⊄, 30⊄.

Count by 5. Start at 50⊄.

Answer:

Explanation:
First coin score is given as 50⊄. If we count by 5⊄, then a 5⊄ should be added to the first coin score to get the second coin which means 50⊄ + 5⊄ = 55⊄. It was given that the score of third coin is 60⊄ which is expected. Similarly, for the fourth coin, we need to add one more 5⊄ to the third coin score which means 60⊄ + 5⊄ = 65⊄. It was given that the score of fifth coin is 70⊄ which is expected. In the same way, the score of sixth coin will be 70⊄ + 5⊄ = 75⊄. The missing numbers are 65⊄, 75⊄.

Count by 10.

Answer:

Explanation:
First coin score is given as 10⊄. If we count by 10⊄, then a 10⊄ should be added to the first coin score to get the second coin which means 10⊄ + 10⊄ = 20⊄. It was given that the score of third coin is 30⊄ which is expected. Similarly, for the fourth coin, we need to add one more 10⊄ to the third coin score which means 30⊄ + 10⊄ = 40⊄. For the fifth coin, we need to add one more 10⊄ to the fourth coin score which means 40⊄ + 10⊄ = 50⊄. It was given that the score of sixth and seventh coin is 60⊄, 70⊄ which is expected. In the same way, the score of eight and nine coin will be 70⊄ + 10⊄ = 80⊄ and 80⊄ + 10⊄ = 90⊄.

Count backyard by 10. Start at 100⊄.

Answer:

Explanation:
First coin score is given as 100⊄. If we count backyard by 10⊄, then a 10⊄ should be subtracted from the first coin score to get the second coin which means 100⊄ – 10⊄ = 90⊄. Similarly, for the third coin, we need to subtract one more 10⊄ from the second coin score which means 90⊄ – 10⊄ = 80⊄. It was given that the score of fourth coin is 70⊄ which is expected. Similarly, for the fifth coin, we need to subtract one more 10⊄ from the fourth coin score which means 70⊄ – 10⊄ = 60⊄. It was given that the score of sixth coin is 50⊄ which is expected. For the seventh coin, we need to subtract one more 10⊄ from the sixth coin score which means 50⊄ – 10⊄ = 40⊄. In the same way, the score of eight and nine coin will be 40⊄ – 10⊄ = 30⊄ and 30⊄ – 10⊄ = 20⊄.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Lesson 1.2 Skip Counting and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Lesson 1.2 Skip Counting Answers Key

Count by 2. Write the missing numbers.

Answer:

Explanation:
First, second and third numbers are given as 2, 4, 6. If we count by 2, then a 2 should be added to the third number to get the fourth number which means 6 + 2 = 8. It was given that fifth and sixth numbers are 10, 12 which is expected. In the same way, the seventh number will be 12 + 2 = 14.

Count by 5. Write the missing numbers.

Answer:

Explanation:
First image is given as 5. If we count by 5, then a 5 should be added to the first image score to get the second image which means 5 + 5 =10. It was given that the score of third image is 15 which is expected. Similarly, for the fourth image, we need to add one more 5 to the third image score which means 15 + 5 = 20. It was given that the score of fifth image is 25 which is expected. Now, for the sixth image, we need to add 5 more to the score of fifth image which means 25 + 5 = 30. In the same way, the score of seventh image will be 30 + 5 = 35.

Count by 10. Write the missing numbers.

Answer:

Explanation:
First image is given as 40. If we count by 10, then a 10 should be added to the first image score to get the second image which means 40 + 10 =50. Similarly, for the third image, we need to add one more 10 to the second image score which means 50 + 10 = 60.

Count by 2. Write the missing numbers.
12, 14, ___, 18, 20, ___, 24, 26, 28
Answer:
12, 14, 16, 18, 20, 22, 24, 26, 28
Explanation:
First two numbers are given as 12,14. If we count by 2, then a 2 should be added to the second number to get the third number which means 14 + 2 =16. It was given that the fourth and fifth numbers as 18, 20 which is expected. Similarly, for the sixth number, we need to add one more 2 to the fifth number which means 20 + 2 = 22. It was given that the seventh, eight and nineth numbers as 24, 26, 28 which is expected.

Count by 5. Write the missing numbers.

15, 20, 25, ____, ____, 40, 45, 50
Answer:
15, 20, 25, 30, 35, 40, 45, 50
Explanation:
First three numbers are given as 15, 20, 25. If we count by 5, then a 5 should be added to the third number to get the fourth number which means 25 + 5 =30. Similarly, for the fifth number, we need to add one more 5 to the fourth number which means 30 + 5 = 35. It was given that the sixth, seventh and eight numbers as 40, 45, 50 which is expected.

___, 60, ___, 70, ___, ___, 85
Answer:
55, 60, 65, 70, 75, 80, 85
Explanation:
The first missing number is 55. The second number is given as 60. If we count by 5, then a 5 should be added to the second number to get the third number which means 60 + 5 = 65. It was given that the fourth number as 70 which is expected. Similarly, for the fifth and sixth numbers, we need to add one more 5 to the fourth number and fifth number which means 70 + 5 = 75 and 75 + 5 = 80. It was given that the seventh number as 85 which is expected.

Count backward by 10. Write the missing numbers.

100, 90, 80, 70, ___, 50, ___, ___, 20, 10
Answer:
100, 90, 80, 70, 60, 50, 40, 30, 20, 10
Explanation:
First four numbers are given as 100, 90, 80, 70. If we count backyard by 10, then a 10 should be subtracted from the fourth number to get the fifth number which means 70 – 10 = 60. It was given that sixth number is 50 which is expected. Similarly, for the seventh number, we need to subtract one more 10 from the sixth number which means 50 – 10 = 40. For the eight number, we need to subtract one more 10 from the seventh number which means 40 – 10 = 30. It was given that the nineth and tenth numbers 20, 10 which is expected.

Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Lesson 1.1 Grouping Objects and get the proper assistance needed during your homework.

Spectrum Math Grade 2 Chapter 1 Lesson 1.1 Grouping Objects Answers Key

Write an equation to match each array.

Answer:
The total number of apples given in the first and second lines are respectively three each. To match the array, we need to add number of apples in all rows which is equal to the total number of apples given. The total number of apples given are 6.

Answer:
The total number of bananas given in the first, second, third and fourth lines are respectively five each. To match the array, we need to add number of bananas in all rows which is equal to the total number of bananas given. The total number of bananas given are 20.

____ + ____ + ____ = _____
Answer:

Explanation:
The total number of hats given in the first, second and third lines are respectively four each. To match the array, we need to add number of hats in all rows which is equal to the total number of hats given. The total number of hats given are 12.

____ + ____ + ____ + ____ + ___ = ____
Answer:

Explanation:
The total number of hats given in the first line is respectively five. To match the array, we need to add number of hats in a row which is equal to the total number of hats given. The total number of hats given are 5.

____ + ____ + ____ = _____
Answer:

Explanation:
The total number of vans given in the first, second and third lines are respectively three each. To match the array, we need to add number of vans in all rows which is equal to the total number of vans given. The total number of vans given are 9.

____ + ____ = _____
Answer:

Explanation:
The total number of airplanes given in the first and second lines are respectively four each. To match the array, we need to add number of airplanes in all rows which is equal to the total number of airplanes given. The total number of airplanes given are 8.

Write an equation to match each array.

____ + ____ = ____
Answer:

Explanation:
The total number of marbles given in the first and second lines are respectively two each. To match the array, we need to add number of marbles in all rows which is equal to the total number of marbles given. The total number of marbles given are 4.

____ + ____ + ____ + ____ = ____
Answer:

Explanation:
The total number of Teddybear’s given in the first, second, third and fourth lines are respectively four each. To match the array, we need to add number of Teddybear’s in all rows which is equal to the total number of teddy bears given. The total number of teddy bears given are 16.

____ + ____ = ____
Answer:

Explanation:
The total number of objects given in the first line is respectively two. To match the array, we need to add number of objects in a row which is equal to the total number of objects given. The total number of objects given are 2.

____ + ____ + ____ = _____
Answer:

Explanation:
The total number of books given in the first, second, and third lines are respectively five each. To match the array, we need to add number of books in all rows which is equal to the total number of books given. The total number of books given are 15.

____ + ____ + ____ + ____ + ____ = _____
Answer:

Explanation:
The total number of cats given in the first, second, third, fourth and fifth lines are respectively five each. To match the array, we need to add number of cats in all rows which is equal to the total number of cats given. The total number of cats given are 25.

____ + ____ = ____
Answer:

Explanation:
The total number of fish given in the first and second lines are respectively five each. To match the array, we need to add number of fish in all rows which is equal to the total number of fish given. The total number of fish given are 10.

Spectrum Math 8th Grade Answer Key | Spectrum Math Workbook Grade 8 Answer Key

Spectrum Math Grade 8 Answer Key Online Chapter 1 Integers and Exponents

• Spectrum Math Grade 8 Chapter 1 Pretest
• Lesson 1.1 Using Exponents
• Lesson 1.2 Equivalent Expressions with Exponents
• Lesson 1.3 Negative Exponents
• Lesson 1.4 Scientific Notation
• Spectrum Math Grade 8 Chapter 1 Posttest

Spectrum Math Grade 8 Answers Chapter 2 Rational and Irrational Number Relationships

• Chapter 2 Pretest
• Lesson 2.1 Understanding Rational and Irrational Numbers
• Lesson 2.2 Square Roots
• Lesson 2.3 Cube Roots
• Lesson 2.4 Using Roots to Solve Equations
• Lesson 2.5 Comparing Rational and Irrational Numbers
• Lesson 2.6 Approximating Irrational Numbers
• Lesson 2.7 Comparing and Ordering Irrational Numbers
• Chapter 2 Posttest

Spectrum Math 8th Grade Answer Key Chapter 3 Linear Equations

• Chapter 3 Pretest
• Lesson 3.1 Understanding Slope
• Lesson 3.2 Graphing Linear Equations Using Slope
• Lesson 3.3 Solving 1-Variable Equations
• Lesson 3.4 Solving Complex 1-Variable Equations
• Lesson 3.5 Graphing Linear Equations
• Lesson 3.6 Understanding Linear Equation System
• Lesson 3.7 Solving 2-Variable Linear Equation System
• Lesson 3.8 Graphing Linear Equation System
• Lesson 3.9 Problem-Solving with Linear Equation System
• Spectrum Math Grade 8 Chapter 3 Posttest

Spectrum Math Grade 8 Chapters 1-3 Mid-Test

Spectrum Math Workbook Grade 8 Answer Key Pdf Chapter 4 Functions

• Spectrum Math Grade 8 Chapter 4 Pretest
• Lesson 4.1 Defining Functions
• Lesson 4.2 Input/Output Tables
• Lesson 4.3 Functions and Linear Relationships
• Lesson 4.4 Functions and Nonlinear Relationships
• Lesson 4.5 Calculating Rate of Change in Functions
• Lesson 4.6 Initial Values of Linear Functions
• Lesson 4.7 Constructing Function Models
• Lesson 4.8 Analyzing Function Graphs
• Lesson 4.9 Graphing Functions
• Lesson 4.10 Comparing Functions
• Spectrum Math Grade 8 Chapter 4 Posttest

Spectrum 8th Grade Math Workbook Chapter 5 Geometry

• Spectrum Math Grade 8 Chapter 5 Pretest
• Lesson 5.1 Transformations: Translations
• Lesson 5.2 Congruence
• Lesson 5.3 Rotations, Reflections, and Translations in the Coordinate Plane
• Lesson 5.4 Transformation Sequences
• Lesson 5.5 Slope and Similar Triangles
• Lesson 5.6 Transversals and Calculating Angles
• Lesson 5.7 Defining Pythagorean Theorem
• Lesson 5.8 Using Pythagorean Theorem
• Lesson 5.9 Pythagorean Theorem in the Coordinate Plane
• Lesson 5.10 Volume: Cylinders
• Lesson 5.11 Volume: Cones
• Lesson 5.12 Volume: Spheres
• Lesson 5.13 Problem-Solving with Volume
• Spectrum Math Grade 8 Chapter 5 Posttest

Spectrum Math 8th Grade Answers Chapter 6 Statistics and Probability

• Spectrum Math Grade 8 Chapter 6 Pretest
• Lesson 6.1 Interpreting Scatter Plots
• Lesson 6.2 Constructing Scatter Plots
• Lesson 6.3 Fitting Lines to Scatter Plots
• Lesson 6.4 Creating Equations to Solve Bivariate Problems
• Lesson 6.5 Frequency Tables
• Spectrum Math Grade 8 Chapter 6 Posttest

Spectrum Math Grade 8 Chapters 1-6 Final Tests

Spectrum Math Answer Key