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- 1. Fill in the Blank
Estimate. Round each addend to the indicated place value.
312 + 12 ; tens
- 2. Fill in the Blank
Estimate. Round each addend to the indicated place value.
383 + 122 ; hundreds
- 3. Fill in the Blank
Estimate. Round each addend to the indicated place value.
34 + 23 ; tens
- 4. Fill in the Blank
Estimate. Round each addend to the indicated place value.
641 + 32 ; tens
- 5. Fill in the Blank
Estimate. Round each addend to the indicated place value.
687 + 231 ; hundreds
- 6. Fill in the Blank
Estimate. Round each addend to the indicated place value.
1,610 + 310; hundreds
- 7. Fill in the Blank
Estimate. Round each addend to the indicated place value.
1,172 + 1,115; tens
- 8. Fill in the Blank
Estimate. Round each addend to the indicated place value.
4,412 + 1,204; hundreds
- 9. Fill in the Blank
Estimate. Round each addend to its greatest place value.
35 + 42
- 10. Fill in the Blank
Estimate. Round each addend to its greatest place value.
455 + 229
- 11. Fill in the Blank
Estimate. Round each addend to its greatest place value.
272 + 593
- 12. Fill in the Blank
Estimate. Round each addend to its greatest place value.
15 + 39
- 13. Fill in the Blank
Estimate. Round each addend to its greatest place value.
216 + 536
- 14. Fill in the Blank
Estimate. Round each addend to its greatest place value.
44 + 29
- 15. Fill in the Blank
Estimate. Round each addend to the indicated place value.
133 + 560; tens
- 16. Fill in the Blank
Estimate. Round each addend to the indicated place value.
133 + 560; hundreds
- 17. Fill in the Blank
Estimate. Round each addend to the indicated place value.
119 + 239 ; tens
- 18. Fill in the Blank
Estimate. Round each addend to its greatest place value.
119 + 239 ; hundreds
- 19. Fill in the Blank
Estimate. Round each addend to its greatest place value.
89 + 71; tens
- 20. Fill in the Blank
Estimate. Round each addend to its greatest place value.
89 + 71; hundreds
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