Go through the Spectrum Math Grade 2 Answer Key Chapter 5 Pretest and get the proper assistance needed during your homework.
Spectrum Math Grade 2 Chapter 5 Pretest Answers Key
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Working with 3-Digit Numbers
Count by 5.
450, ____, ____, 465, 470, ____, 480, ____
Answer:
The missing digits are 455, 460, 475, and 485.
Explanation:
Here, we have counted 3-digit numbers by 5. So we have started from 450 which is followed by
450 + 5 = 455
455 + 5 = 460
460 + 5 = 465
465 + 5 = 470
470 + 5 = 480
480 + 5 = 485
Hence the missing digits are 455, 460, 475, and 485.
Count by 10.
360, ____, ____, 390, 400, ____, ____, 430
Answer:
The missing digits are 360, 370, 380, 410, and 420.
Explanation:
Here, we have counted 3-digit numbers by 10. So we have started from 360 which is followed by
360 + 10 = 370
370 + 10 = 380
380 + 10 = 390
390 + 10 = 400
400 + 10 = 410
410 + 10 = 420
Hence the missing digits are 360, 370, 380, 410, and 420.
Count by 100.
____, 200, ___, ____, 500, ___, ____
Answer:
The missing digits are 100, 300, 400, 600, and 700.
Explanation:
Here, we have counted 3-digit numbers by 100. So we have started from 100 which is followed by
100 + 100 = 200
200 + 100 = 300
300 + 100 = 400
400 + 100 = 500
500 + 100 = 600
600 + 100 = 700
Hence the missing digits are 100, 300, 400, 600, and 700.
Write the number and its expanded form or number name.
_______
Expanded Form:
____ + ____ + ____ = ____
Answer:
The number is 234 and its expanded form is 200 + 30 + 4 = 234.
Explanation:
By observing the given figure the number is 234
The expanded
______
Number Name:
___________
Answer:
The number is 336 and the number name is three hundred and thirty-six.
Explanation:
Compare numbers. Use >, <, or =.
460 
540
Answer:
460 < 540
Explanation:
Compare hundreds, 4 is less than 5.
Hence 460 is less than 540.
575 590
Answer:
575 < 590
Explanation:
Given,
575 and 590
Compare hundreds, 5 is equal to 5.
If hundreds are equal, 7 is less than 9.
Hence 575 is less than 590.
701 707
Answer:
701 is less than 707
Explanation:
Given,
Compare hundreds, 7 is equal to 7.
If hundreds are the same, compare tens. 0 is equal to 0.
If tens are equal, compare ones. 1 is less than 7.
701 < 707
157 120
Answer:
157 > 120
Explanation:
Given,
157 and 120
Compare hundreds, 1 is equal to 1.
If hundreds are equal compare tens. 5 > 2.
Hence 157 is greater than 120.
918 908
Answer:
918 > 908
Explanation:
Given,
Compare hundreds, 9 is equal to 9.
If hundreds are equal compare tens. 1 is greater than 0.
Hence 918 is greater than 908.
260 240
Answer:
260 > 240
Explanation:
Given,
260 and 240
Compare hundreds, 2 is equal to 2.
if hundreds are equal compare tens. 6 is greater than 4.
Hence 260 is greater than 240.
647 742
Answer:
647 < 742
Explanation:
Given,
647 and 742
Compare hundreds, 6 is less than 7.
Hence 647 is less than 742.
450 370
Answer:
450 > 370
Explanation:
Given,
450 and 370
Compare hundreds, 4 is greater than 3.
Hence 450 is greater than 370.
103 120
Answer:
103 < 120
Explanation:
Given,
103 and 120
Compare hundreds, 1 is equal to 1.
If hundreds are equal, compare tens. 0 < 2
Hence 103 < 120.
347 298
Answer:
347 > 298
Explanation:
Given,
347 and 298
Compare hundreds, 3 is greater than 2.
Hence 347 is greater than 298.
818 818
Answer:
818 is equal to 818. 818 = 818
Explanation:
963 993
Answer:
963 > 993
Explanation:
Given,
963 and 993.
Compare hundreds, 9 is equal to 9.
If hundreds are equal compare tens.
Hence 963 is greater than 993.
Count by 5.
450, ____, ____, 465, 470, ____, 480, _____
Answer:
The missing digits are 455, 460, 475, and 485.
Explanation:
Here, we have counted 3-digit numbers by 5. So we have started from 450 which is followed by
450 + 5 = 460
460 + 5 = 465
465 + 5 = 470
470 + 5 = 475
475 + 5 = 480
480 + 5 = 485
Hence the missing digits are 455, 460, 475, and 485.
Count by 10.
360, ____, ____, 390, 400, ____, ____, 430
Answer:
The missing digits are 370, 380, 410, and 420.
Explanation:
Here, we have counted 3-digit numbers by 10. So we have started from 360 which is followed by
360 + 10 = 370
370 + 10 = 380
380 + 10 = 390
390 + 10 = 400
400 + 10 = 410
410 + 10 = 420
Hence the missing digits are 370, 380, 410, and 420.
Count by 100.
____, 200, ____, ____, 500, ____, ____
Answer:
The missing digits are 100, 300, 400, 600, and 700.
Explanation:
Here, we have counted 3-digit numbers by 100. So we have started from 100 which is followed by
100 + 100 = 200
200 + 100 = 300
300 + 100 = 400
400 + 100 = 500
500 + 100 = 600
600 + 100 = 700
Hence the missing digits are 100, 300, 400, 600, and 700.
Write the number and its expanded form or number name.
Expanded Form:
____ + _____ + ____ = _____
Answer:
The number is 234 and its expanded form is 200 + 30 + 4.
Explanation:
In the given figure the number is 234. There are 2 hundred, 30 tens, and 4 ones.
The expanded form is 200 + 30 + 4 = 234.
Number Name:
_______________
Answer:
The number is 306 and the number name is three hundred and six.
Explanation:
In the given figure the number is 306 and the number name is Three hundred and six.
Compare numbers. Use> , < , or =.
460 
540
Answer:
460 < 540
Explanation:
Compare the hundred, 4 is less than 5
Hence 460 is less than 540.
575 590
Answer:
575 < 590
Explanation:
Compare the hundreds, 5 is equal to 5.
If hundreds are the same, compare tens. 7 is less than 9.
Hence 575 is less than 590.
701 707
Answer:
701 < 707
Explanation:
Compare hundreds, 7 is equal to 7.
If hundreds are equal compare tens 0 is equal to 0.
If tens are equal compare ones. 1 is less than 7.
Hence 701 is less than 707.
157 120
Answer:
157 > 120
Explanation:
Given,
157 and 120
Compare hundreds, 1 is equal to 1.
If hundreds are the same compare tens. 5 is greater than 2.
Hence 157 is greater than 120.
918 908
Answer:
918 > 908
Explanation:
Given,
918 and 908
Compare hundreds, 9 is equal to 9.
If hundreds are equal, compare tens. 1 greater than 0.
Hence 918 is greater than 908.
260 240
Answer:
260 > 240
Explanation:
Given,
260 and 240
Compare hundreds, 2 is equal to 2.
If hundreds are equal, compare tens. 6 is greater than 4
hence 260 is greater than 240.
647 742
Answer:
647 < 742
Explanation:
Given,
647 and 742
Compare hundreds, 6 is less than 7.
Hence 647 is less than 742.
450 370
Answer:
450 > 370
Explanation:
Given,
450 and 370
Compare hundreds, 4 is greater than 3.
Hence 450 is greater than 370.
103 120
Answer:
103 < 120
Explanation:
Given,
103 and 120
Compare hundreds. 1 is equal to 1
If hundreds are equal compare tens. 0 is less than 2
Hence the numbers 103 is less than 120.
347 298
Answer:
374 > 298
Explanation:
Given,
374 and 298
First compare hundreds, 3 is greater than 2.
Hence 374 is greater than 298.
818 818
Answer:
818 is equal to 818.
Explanation:
Given,
818 and 818
Compare hundreds, 8 is equal to 8.
If hundreds are equal, compare tens. 1 is equal to 1.
If tens are equal, compare ones. 8 is equal to 8.
Hence 818 is equal to 818.
963 993
Answer:
963 < 993
Explanation:
Given,
963 and 993
Compare hundreds, 9 is equal to 9.
If hundreds are the same, compare tens 6 < 9
Hence 963 is less than 993.
Add.
Answer:
The addition of the two given numbers is 70.
Explanation:
First, add the one’s place digit numbers. Add 7 + 3 = 10. Write 0 in one’s place and carry over 1 to the tens place.
Next, add ten’s place. Add 2 + 4 + 1 (carry over) = 7.
Hence the addition of the two given numbers is 70.
Answer:
The addition of the two given numbers is 178.
Explanation:
First, add the one’s place digit numbers. Add 6 + 2 = 8
Next, add ten’s place. Add 8 + 9 = 17
Hence the addition of the two given numbers is 178.
Answer:
The addition of the two given numbers is 182.
Explanation:
First, add the one’s place digit numbers. Add 7 + 5 = 12. Write 2 in one’s place and carry over 1 to the tens place.
Next, add ten’s place. Add 3 + 4 + 1 (carry over) = 8.
Hence the addition of the two given numbers is 182.
Answer:
The addition of the two given numbers is 95.
Explanation:
First, add the one’s place digit numbers. Add 2 + 3 = 5.
Next, add ten’s place. Add 8 + 1 = 9.
Hence the addition of the two given numbers is 95.
Answer:
The addition of the two given numbers is 199.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 5 + 4 = 9 ones.
3. Add the tens column. 4 + 5 =9 tens.
4. The addition of the two given numbers is 199.
Answer:
The addition of the two given numbers is 283.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 7 + 6 = 13 ones. Write 3 in one’s place and carry over 1 to ten’s place.
3. Add the tens column. 8 + 9 + 1 (carry over) = 18 tens. Write 8 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 2 + 1 + 1 (carry over) = 4. Hence the answer is 283.
Answer:
The addition of the two given numbers is 792.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 7 + 5 = 12 ones. Write 2 in one’s place and carry over 1 to a ten’s place.
3. Add the tens column. 8 + 1 (carry over) = 9.
4. Last add the hundreds column. 3 + 4 = 7. Hence the addition of the two given numbers is 792.
Answer:
The addition of the two given numbers is 979.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 3 = 9 ones.
3. Add the tens column. 8 + 9 = 17 tens. Write 7 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 7 + 1 + 1 (carry over) = 9. Hence the answer is 979.
Answer:
The addition of the two given numbers is 420.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 0 + 0 = 0 ones.
3. Add the tens column. 5 + 7 = 12 tens. Write 2 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 2 + 1 + 1 (carry over) = 4. Hence the answer is 417.
Answer:
The addition of the two given numbers is 905.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 3 + 2 = 5 ones.
3. Add the tens column. 6 + 4 = 10 tens. Write 0 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 8 + 1 (carry over) = 9. Hence the answer is 905.
Answer:
The addition of the two given numbers is 369.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 3 + 6 = 9 ones.
3. Add the tens column. 2 + 4 = 6 tens.
4. Bring down the 3 down to hundred’s place. Hence the addition of the two given numbers is 369.
Answer:
The addition of the two given numbers is 150.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 4 = 10 ones. Write 0 in one’s place and carry over 1 to a ten’s place.
3. Add the tens column. 7 + 8 = 15 tens. Write 5 in ten’s place and carry over 1 to a hundred’s place.
4. Hence the addition of the two given numbers is 150.
Answer:
The addition of the two given numbers is 228.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 2 + 6 = 8 ones.
3. Add the tens column. 9 + 3 = 12 tens. Write 2 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 1 + 1 (carry over) = 2. Hence the answer is 228.
Answer:
The addition of the two given numbers is 277.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 1 = 7 ones.
3. Add the tens column. 4 + 3 = 7 tens.
4. Bring down the 2 from hundred’s place down. Hence the addition of the two given numbers is 277.
Answer:
The addition of the two given numbers is 208.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 7 + 1 = 8 ones.
3. Add the tens column. 8 + 2 = 10 tens. Write 0 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 1 + 1 (carry over) = 2. Hence the answer is 208.
Answer:
The addition of the two given numbers is 169.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 3 = 9 ones.
3. Add the tens column. 7 + 9 = 16 tens. Write 6 in ten’s place and carry over 1 to a hundred’s place.
4. Hence the addition of the two given numbers is 169.
Answer:
The addition of the two given numbers is 77.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 3 + 4 = 7 ones.
3. Add the tens column. 2 + 5 = 7 tens.
4. Hence the addition of the two given numbers is 77.
Answer:
The addition of the two given numbers is 417.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 1 = 7 ones.
3. Add the tens column. 8 + 3 = 11 tens. Write 1 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 2 + 1 + 1 (carry over) = 4. Hence the answer is 417.
Answer:
The addition of the two given numbers is 228.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 2 + 6 = 8 ones.
3. Add the tens column. 3 + 9 = 12 tens. Write 2 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 1 + 1 (carry over) = 2. Hence the answer is 228.
Answer:
The addition of the two given numbers is 277.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 1 = 7 ones.
3. Add the tens column. 4 + 3 = 7 tens.
4. Hence the addition of the two given numbers is 277.
Answer:
The addition of the two given numbers is 208.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 7 + 1 = 8 ones.
3. Add the tens column. 8 + 2 = 10 tens. Write 0 in ten’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 1 + 1 (carry over) = 2. Hence the answer is 208.
Answer:
The addition of the two given numbers is 169.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 3 = 9 ones.
3. Add the tens column. 7 + 9 = 16 tens. Hence the addition of the two given numbers is 169.
Answer:
The addition of the two given numbers is 77.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 2 + 3 = 5 ones.
3. Add the tens column. 1 + 0 = 1 tens.
4. Hence the addition of the two given numbers is 77.
Answer:
The addition of the two given numbers is 417.
Explanation:
1. Arrange the numbers vertically.
2. Add the one’s column. 6 + 1 = 7 ones.
3. Add the tens column. 8 + 3 + 1 (carry over) = 11 tens. Write 1 in one’s place and carry over 1 to a hundred’s place.
4. Last add the hundreds column. 2 + 1 + 1 (carry over) = 4. Hence the answer is 417.
Subtract.
Answer:
The subtraction of the two given numbers is 108.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. Since 5 > 3 and we cannot subtract 5 from 3. So, we regroup 2 tens and 3 ones. Now, 2 tens + 13 ones = 1 ten and 13 ones. 13 – 5 = 8 ones.
3. Subtract the tens column. 1 – 1 = 0 tens.
4. Bring down the 1 to hundreds place. Hence the answer is 108.
Hence the answer is 78.
Answer:
The subtraction of the two given numbers is 64.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 7 – 3 = 4 ones
3. Subtract the tens column. 8 -2 = 6 tens. Hence the answer is 64.
Answer:
The subtraction of the two given numbers is 510.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 5 – 5 = 0
3. Subtract the tens column. 4 – 3 = 1 tens.
4. Now bring down the 5 from the hundred’s place. Hence the answer is 510.
Answer:
The subtraction of the two given numbers is 16.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 9 – 3 = 6 ones
3. Subtract the tens column. 7 – 6 = 1 tens. Hence the subtraction of the two given numbers is 16.
Answer:
The subtraction of the two given numbers is 94.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 7 – 3 = 4 ones.
3. Subtract the tens column. Since 9 > 8 and we cannot subtract 9 from 8. So, we regroup 1 hundred and 8 tens. Now, 1 hundred + 8 tens = 1 hundred + 8 tens. 18 – 9 = 9 tens. Hence the answer is 94.
Answer:
The subtraction of the two given numbers is 639.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. Since 3 > 2 and we cannot subtract 3 from 2. So, we regroup 8 tens and 2 ones. Now, 8 tens + 2 ones = 7 tens and 12 ones. 12 – 3 = 9 ones.
3. Subtract the tens column. 7 – 4 = 3 tens.
4. Subtract the hundred’s column. 7 – 1 = 6. Hence the subtraction of the two given numbers is 639.
Answer:
The subtraction of the two given numbers is 444.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 8 – 4 = 4 ones.
3. Subtract the tens column. 9 – 5 = 4 tens.
4. Subtract the hundreds column. 8 – 4 = 4 hundred. Hence the subtraction of the two given numbers is 444.
Answer:
The subtraction of the two given numbers is 442.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 3 – 1 = 2 ones.
3. Subtract the tens column. 6 – 2 = 4 tens.
4. Subtract the hundreds column. 7 – 3 = 4 hundred. Hence the subtraction of the two given numbers is 442.
Answer:
The subtraction of the two given numbers is 848.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. Since 3 > 1 and we cannot subtract 3 from 1. So, we regroup 8 tens and 1 ones. Now, 8 tens + 1 ones = 7 tens and 11 ones. 11 – 3 = 8 ones.
3. Subtract the tens column. 7 – 3 = 4 tens.
4. Subtract the hundreds column. 9 – 1 = 8. The subtraction of the two given numbers is 848.
Answer:
The subtraction of the two given numbers is 600.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 5 – 5 = 0 ones.
3. Subtract the tens column. 2 – 2 = 0 tens.
4. Subtract the hundreds column. 7 – 1 = 6 hundred. Hence the subtraction of the two given numbers is 600.
Answer:
The subtraction of the two given numbers is 732.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 5 – 3 = 2 ones.
3. Subtract the tens column. Since 7 > 0 and we cannot subtract 7 from 0. So, we regroup 8 hundred and 0 ones. Now, 7 hundred + 10 tens = 7 hundred and 10 tens. 10 – 7 = 3 ones.
4. Bring down the 7 from the hundreds place. Hence the subtraction of the two given numbers is 732.
Answer:
The subtraction of the two given numbers is 40.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 0 – 0 = 0.
3. Subtract the tens column. Since 8 > 2 and we cannot subtract 8 from 2. So, we regroup 1 hundred and 2 tens. Now, 1 hundred + 2 tens = 1 hundred and 12 ones. 12 – 8 = 4 hundred. Hence the subtraction of the two given numbers is 40.
Answer:
The subtraction of the two given numbers is 35.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 6 -1 = 5 ones.
3. Subtract the tens column. 7 – 4 = 3 tens. Hence the answer is 35.
Answer:
The subtraction of the two given numbers is 52.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 7 – 5 = 2 ones.
3. Subtract the tens column. 8 – 3 = 5 tens. Hence the answer is 78.
Answer:
The subtraction of the two given numbers is 37.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. Since 5 > 2 and we cannot subtract 5 from 2. So, we regroup 7 tens and 2 ones. Now, 7 tens + 2 ones = 6 tens and 12 ones. 12 – 5 = 7 ones.
3. Subtract the tens column. 6 – 3 = 3 tens. Hence the answer is 37.
Answer:
The subtraction of the two given numbers is 61.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 3 – 2 = 1 ones.
3. Subtract the tens column. Since 9 > 5 and we cannot subtract 9 from 5. So, we regroup 1 hundred and 5 tens. Now, 1 hundred + 5 tens = 1 hundred and 15 tens. 15 – 9 = 6 ones.
Answer:
The subtraction of the two given numbers is 609.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. Since 4 > 3 and we cannot subtract 4 from 3. So, we regroup 6 tens and 3 ones. Now, 6 tens + 13 ones = 5 tens and 13 ones. 13 – 4 = 9 ones.
3. Subtract the tens column. 5 – 5 = 0 tens.
4. Subtract the hundreds column. 7 – 1 = 6 hundred. Hence the subtraction of the two given numbers is 609.
Answer:
The subtraction of the two given numbers is 426.
Explanation:
1. Arrange the numbers vertically.
2. Subtract the one’s column. 6 – 0 = 6 ones.
3. Subtract the tens column. 7 – 5 = 2 tens.
4. Subtract the hundreds column. 8 – 4 = 4 hundred. Hence the subtraction of the two given numbers is 426.
