Spectrum Math Grade 4 Chapter 1 Pretest Answer Key

This handy Spectrum Math Grade 4 Answer Key Chapter 1 Pretest provides detailed answers for the workbook questions.

Spectrum Math Grade 4 Chapter 1 Pretest Answers Key

Add or subtract.

Question 1.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 1
Answer:
Add the ones     Add the tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 1
Explanation:
Adding the ones we get 5 + 3 = 8
Adding the tens we get 3 + 0 = 3
So, the sum of both addends 35 and 3 is 38
35 + 3 = 38

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 2
Answer:
Add the ones     Add the tens
     Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 2
Explanation:
Adding the ones we get 5 + 3 = 8
Adding the tens we get 2 + 1 = 3
So, the sum of both addends 25 and 13 is 38
25 + 13 = 38

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 3
Answer:
Add the ones     Add the tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 3
Explanation:
Adding the ones we get 5 + 4 = 9
Adding the tens we get 7 + 2 = 9
So, the sum of both addends 75 and 24 is 99
75 + 24 = 99

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 4
Answer:
Add the ones     Add the tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 4
Explanation:
Adding the ones we get 3 + 2 = 5
Adding the tens we get 1+ 1 = 2
So, the sum of both addends 13 and 12 is 25
13 + 12 = 25

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 5
Answer:
Add the ones     Add the tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 5
Explanation:
Adding the ones we get 2 + 7 = 9
Adding the tens we get 4+ 0 = 4
So, the sum of both addends 42 and 7 is 49
42 + 7 = 49

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 6
Answer:
Add the ones     Add the tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 6
Explanation:
Adding the ones we get 4 + 3 = 7
Adding the tens we get 5+ 3 = 8
So, the sum of both addends 54 and 33 is 87
54 + 33 = 87

Question 2.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 7
Answer:
Add the ones     Add the tens
            Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 7
Explanation:
Adding the ones we get 3 + 4 = 7
Adding the tens we get 4+ 2 = 6
So, the sum of both addends 43 and 24 is 67
43 + 24 = 67

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 8
Answer:
Add the ones     Add the tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 8
Explanation:
Adding the ones we get 4 + 5 = 9
Adding the tens we get 5+ 0 = 5
So, the sum of both addends 54 and 5 is 59
54 + 5 = 59

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 9
Answer:
Add the ones     Add the tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 9
Explanation:
Adding the ones we get 3 + 1 = 4
Adding the tens we get 6+ 3 = 9
So, the sum of both addends 63 and 31 is 94
63 + 31 = 94

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 10
Answer:
Add the ones     Add the tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 10
Explanation:
Adding the ones we get 2 + 6 = 8
Adding the tens we get 8+ 1 = 9
So, the sum of both addends 82 and 16 is 98
82 + 16 = 98

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 11
Answer:
Add the ones     Add the tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 11
Explanation:
Adding the ones we get 2 + 3 = 5
Adding the tens we get 3+ 2 = 5
So, the sum of both addends 32 and 23 is 55
32 + 23 = 55

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 12
Answer:
Add the ones     Add the tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 12
Explanation:
Adding the ones we get 4 + 5 = 9
Adding the tens we get 7+ 1 = 8
So, the sum of both addends 74 and 15 is 89
74 + 15 = 89

Question 3.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 13
Answer:
Add the ones     Add the tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 13
Explanation:
Adding the ones we get 0 + 3 = 3
Adding the tens we get 5+ 3 = 8
So, the sum of both addends 50 and 33 is 83
50 + 33 = 83

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 14
Answer:
Add the ones     Add the tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 14
Explanation:
Adding the ones we get 5 + 2 = 7
Adding the tens we get 9+ 0 = 9
So, the sum of both addends 95 and 2 is 97
95 + 2 = 97

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 15
Answer:
Add the ones     Add the tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 15
Explanation:
Adding the ones we get 2 + 5 = 7
Adding the tens we get 3+ 2 = 5
So, the sum of both addends 32 and 25 is 57
32 + 25 = 57

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 16
Answer:
Add the ones     Add the tens
            Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 16
Explanation:
Adding the ones we get 3 + 5 = 8
Adding the tens we get 7+ 2 = 9
So, the sum of both addends 73 and 25 is 98
73 + 25 = 98

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 17
Answer:
Add the ones     Add the tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 17
Explanation:
Adding the ones we get 6 + 3 = 9
Adding the tens we get 5+ 1 = 6
So, the sum of both addends 56 and 13 is 69
56 + 13 = 69

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 18
Answer:
Add the ones     Add the tens
           Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 18
Explanation:
Adding the ones we get 7 + 2 = 9
Adding the tens we get 4+ 3 = 7
So, the sum of both addends 47 and 32 is 79
47 + 32 = 79

Question 4.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 19
Answer:
Add the ones     Add the tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 19
Explanation:
Adding the ones we get 2 + 7 = 9
Adding the tens we get 1+ 0 = 1
So, the sum of both addends 12 and 7 is 19
12 + 7 = 19

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 20
Answer:
Add the ones     Add the tens
     Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 20
Explanation:
Adding the ones we get 6 + 2 = 8
Adding the tens we get 3+ 1 = 4
So, the sum of both addends 36 and 12 is 48
36 + 12 = 48

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 21
Answer:
Add the ones     Add the tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 21
Explanation:
Adding the ones we get 5 + 3 = 8
Adding the tens we get 5+ 2 = 7
So, the sum of both addends 55 and 23 is 78
55 + 23 = 78

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 22
Answer:
Add the ones     Add the tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 22
Explanation:
Adding the ones we get 0 + 9 = 9
Adding the tens we get 7+ 1 = 8
So, the sum of both addends 70 and 19 is 89
70 + 19 = 89

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 23
Answer:
Add the ones     Add the tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 23
Explanation:
Adding the ones we get 2 + 4 = 6
Adding the tens we get 9+ 0 = 9
So, the sum of both addends 92 and 4 is 96
92 + 4 = 96

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 24
Answer:
Add the ones     Add the tens
     Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 24
Explanation:
Adding the ones we get 4 + 3 = 7
Adding the tens we get 5+ 2 = 7
So, the sum of both addends 54 and 23 is 77
54 + 23 = 77

Question 5.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 25
Answer:
Subtract ones     Subtract tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 25
Explanation:
Subtract the ones we get 5 – 4 = 1
Subtract the tens we get 4 – 0 = 4
So, the difference of 45 and 4 is  41
45 – 4 = 41

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 26
Answer:
Subtract ones     Subtract tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 26
Explanation:
Subtract the ones we get 5 – 3 = 2
Subtract the tens we get 7 – 2 = 5
So, the difference of 75 and 23 is  52
75 – 23 = 52

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 27
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 27
Explanation:
Subtract the ones we get 6 – 4 = 2
Subtract the tens we get 6 – 1 = 5
So, the difference of 66 and 14 is  52
66 – 14 = 52

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 28
Answer:
Subtract ones     Subtract tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 28
Explanation:
Subtract the ones we get 5 – 1 = 4
Subtract the tens we get 9 – 3 = 6
So, the difference of 95 and 31 is  64
95 – 31 = 64

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 29
Answer:
Subtract ones     Subtract tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 29
Explanation:
Subtract the ones we get 4 – 2 = 2
Subtract the tens we get 8 – 2 = 6
So, the difference of 84 and 22 is  62
84 – 22 = 62

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 30
Answer:
Subtract ones     Subtract tens
     Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 30
Explanation:
Subtract the ones we get 5 – 2 = 3
Subtract the tens we get 2 – 1 = 1
So, the difference of 25 and 12 is  13
25 – 12 = 13

Question 6.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 31
Answer:
Subtract ones     Subtract tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 31
Explanation:
Subtract the ones we get 9 – 7 = 2
Subtract the tens we get 4 – 2 = 2
So, the difference of 49 and 27 is  22
49 – 27 = 22

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 32
Answer:
Subtract ones     Subtract tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 32
Explanation:
Subtract the ones we get 7 – 6 = 1
Subtract the tens we get 5 – 4 = 1
So, the difference of 57 and 46 is  11
57 – 46 = 11

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 33
Answer:
Subtract ones     Subtract tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 33
Explanation:
Subtract the ones we get 9 – 8 = 1
Subtract the tens we get 3 – 1 = 2
So, the difference of 39 and 18 is  21
39 – 18 = 21

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 34
Answer:
Subtract ones     Subtract tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 34
Explanation:
Subtract the ones we get 9 – 7 = 2
Subtract the tens we get 7 – 2 = 5
So, the difference of 79 and 27 is  52
79 – 27 = 52

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 35
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 35
Explanation:
Subtract the ones we get 7 – 6 = 1
Subtract the tens we get 2 – 0 = 2
So, the difference of 27 and 6 is  21
27 – 6 = 21

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 36
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 36
Explanation:
Subtract the ones we get 8 – 6 = 2
Subtract the tens we get 8 – 5 = 3
So, the difference of 88 and 56 is  32
88 – 56 = 32

Question 7.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 37
Answer:
Subtract ones     Subtract tens
           Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 37
Explanation:
Subtract the ones we get 5 – 5 = 0
Subtract the tens we get 6 – 5 = 1
So, the difference of 65 and 55 is  10
65 – 55 = 10

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 38
Answer:
Subtract ones     Subtract tens
           Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 38
Explanation:
Subtract the ones we get 8 – 3 = 5
Subtract the tens we get 7 – 3 = 4
So, the difference of 78 and 33 is  45
78 – 33 = 45

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 39
Answer:
Subtract ones     Subtract tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 39
Explanation:
Subtract the ones we get 4 – 2 = 2
Subtract the tens we get 5 – 4 = 1
So, the difference of 54 and 42 is  12
54 – 42 = 12

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 40
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 40
Explanation:
Subtract the ones we get 7 – 6 = 1
Subtract the tens we get 9 – 2 = 7
So, the difference of 97 and 26 is  71
97 – 26 = 71

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 41
Answer:
Subtract ones     Subtract tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 41
Explanation:
Subtract the ones we get 9 – 5 = 4
Subtract the tens we get 2 – 1 = 1
So, the difference of 29 and 15 is  14
29 – 15 = 14

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 42
Answer:
Subtract ones     Subtract tens
         Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 42
Explanation:
Subtract the ones we get 9 – 8 = 1
Subtract the tens we get 5 – 4 = 1
So, the difference of 59 and 48 is  11
59 – 48 = 11

Question 8.
a.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 43
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 43
Explanation:
Subtract the ones we get 4 – 3 = 1
Subtract the tens we get 5 – 2 = 3
So, the difference of 54 and 23 is  31
54 – 23 = 31

b.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 44
Answer:
Subtract ones     Subtract tens
      Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 44
Explanation:
Subtract the ones we get 9 – 8 = 1
Subtract the tens we get 2 – 1 = 1
So, the difference of 29 and 18 is  11
29 – 18  = 11

c.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 45
Answer:
Subtract ones     Subtract tens
       Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 45
Explanation:
Subtract the ones we get 7 – 7 = 0
Subtract the tens we get 4 – 3 = 1
So, the difference of 47 and 37 is  10
47 – 37 = 10

d.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 46
Answer:
Subtract ones     Subtract tens
        Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 46
Explanation:
Subtract the ones we get 9 – 6 = 3
Subtract the tens we get 9 – 6 = 3
So, the difference of 99 and 66 is  33
99 – 66 = 33

e.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 47
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 47
Explanation:
Subtract the ones we get 9 – 7 = 2
Subtract the tens we get 8 – 2 = 6
So, the difference of 89 and 27 is  62
89 – 27 = 62

f.
Spectrum Math Grade 4 Chapter 1 Pretest Answer Key 48
Answer:
Subtract ones     Subtract tens
          Spectrum Math Grade 4 Chapter 1 Pretest Answer Key img 48
Explanation:
Subtract the ones we get 6 – 5 = 1
Subtract the tens we get 3 – 1 = 2
So, the difference of 36 and 15 is  21
36 – 15 = 21

Solve each problem.

Question 9.
Mr. Dimas has 15 new students in his fourth-grade class. He already has 21 students in the class. How many students are in Mr. Dimas’s class?
There are ___________ students in his class.
Answer:

Question 10.
There are 35 pages in Kendrick science book. Last night, Kendrick read 14 pages. How many more pages does Kendrick have left to read?
There are ____ pages left to read.
Answer:
21
Explanation:
There are 35 pages in Kendrick science book
Kendrick read 14 pages
So, there are  more 21 pages left to read.
Total pages – read pages = left pages
35 – 14 = 21

Question 11.
Kono’s father gave him 75 apples so he could pass them out to his friends. If Kono gave 43 away, how many apples does he have left?
There are ____ apples left.
Answer:
32
Explanation:
Kono’s father gave him 75 apples so he could pass them out to his friends.
If Kono gave 43 away, then
There will be  32 apples left.
75 – 43 = 32

Question 12.
Monica and Tania want to throw a surprise party for Rosa. They plan to send out 45 invitations. If Tania writes 24, how many invitations does Monica need to write?
Monica needs to write ___________ invitations.
Answer:
21
Explanation:
Monica and Tania want to throw a surprise party for Rosa
They plan to send out 45 invitations
If Tania writes 24, then
Monica needs to write 21 invitations.
24 + 21 = 45

Question 13.
Seki’s soccer team is in the State Cup Tournament. There were 23 goals made in the entire tournament. Seki’s team made 12 of them. How many goals were made by the other teams?
The other teams scored ____ goals.
Answer:
11
Explanation:
There were 23 goals made in the entire tournament
Seki’s team made 12 of them
The other teams scored 11 goals.
12 + 11 = 23

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