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

**Check What You Know**

**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 â€“ 5 = 8 ones.

3. Subtract the tens column. 1 â€“ 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 â€“ 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 â€“ 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 â€“ 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 â€“ 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 â€“ 5 = 7 ones.

3. Subtract the tens column. 6 â€“ 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 â€“ 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 â€“ 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.