EXERCIS
A. Estimate first, then name the sum or difference.
Use your estimate to check your work.
1. 41 + 37
2. 428 + 61
3. 1314 + 272 , 4. 1521 + 4325
5. 33278 + 1902 6. 9893 – 5164
7. 27348 - 1267 8. 1597 – 290
9. 8001 - 457 10. 55662 – 3465
Answers
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nearest 10s or 100s or 1000?
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