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Reteach and Skills Practice Workbook

Reteach and Skills Practice Workbook

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15–2<br />

Name<br />

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

Date<br />

Estimate Decimal Sums <strong>and</strong> Differences<br />

To estimate the sums of decimals, round each decimal to the nearest<br />

whole number. Then add the rounded numbers.<br />

Estimate 22.52 + 4.49.<br />

↓ ↓<br />

Round each 23 + 4<br />

number to the<br />

nearest whole number.<br />

Estimate $6.25 - $4.79.<br />

↓ ↓<br />

Round each $6.00 - $5.00<br />

number to the<br />

nearest dollar.<br />

4NS2.1<br />

Chapter Resources<br />

Add. 23+ 4 = 27<br />

So 22.52 + 4.49 is about 27.<br />

Subtract. $6.00 - $5.00 = $1.00<br />

So $6.25 - $4.79 is about $1.00.<br />

Estimate. Round to the nearest whole number. Show how you<br />

rounded.<br />

1. $5.89 + $4.29<br />

2. 17.3 + 5.67<br />

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

3. 8.48 + 3.07<br />

4. 6.7 + 3.2<br />

5. $15.95 + $2.59<br />

6. 25.7 + 8.9<br />

7. 14.25 - 7.84<br />

8. 10.97 - 7.4<br />

9. 3.62 - 1.87<br />

10. $10.25 - $3.45<br />

11. $10.54 - $7.81<br />

12. 43.7 - 20.48<br />

Grade 4 273 Chapter 15

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