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Reteach and Skills Practice Workbook

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2–5<br />

Name<br />

<strong>Reteach</strong><br />

Subtract Numbers<br />

Date<br />

Subtraction of whole numbers is similar to addition of whole numbers<br />

in that you may need to regroup.<br />

Example:<br />

481<br />

- 292<br />

4NS3.1<br />

Chapter Resources<br />

Step 1: Rewrite the problem. 4 hundreds 8 tens 1 one<br />

- 2 hundreds 9 tens 2 ones<br />

Step 2: Regroup 1 of the hundreds<br />

into an equivalent 10 tens.<br />

Step 3: Regroup 1 of the tens into<br />

an equivalent 10 ones.<br />

3 hundreds 18 tens 1 one<br />

- 2 hundreds 9 tens 2 ones<br />

3 hundreds 17 tens 11 ones<br />

- 2 hundreds 9 tens 2 ones<br />

Step 4: Subtract 3 hundreds 17 tens 11 ones<br />

- 2 hundreds 9 tens 2 ones<br />

1 hundreds 8 tens 9 ones<br />

= 189<br />

Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.<br />

Subtract. Use addition to check.<br />

1. 561<br />

- 272<br />

2. 811<br />

- 428<br />

4. 1,261<br />

- 633<br />

5. 2,536<br />

- 844<br />

7. 5,619<br />

- 2,828<br />

8. 9,116<br />

- 5,853<br />

3. 785<br />

- 494<br />

6. 8,831<br />

- 566<br />

9. 2,914<br />

- 1,265<br />

Grade 4 29 Chapter 2

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