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Estimating Sums. 5 7 + 3 1. Actual answer. 5 7 5 7 + 3 1 + 3 1 8 8. Estimated answer. 5 7 6 0 + 3 1 +3 0 9 0. Your Turn! . Actual answer. 6 8 + 2 4. Estimated answer. 6 8 + 2 4 +_____ 9 2. Estimated answer. 6 8 7 0

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## Estimating Sums

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**5 7**+ 3 1**Actual answer**5 7 5 7 + 3 1+ 3 1 8 8**Estimated answer**5 7 6 0 + 3 1 +3 0 9 0**Actual answer**6 8 + 2 4**Estimated answer**6 8 + 2 4+_____ 9 2**Estimated answer**6 8 7 0 + 2 4+ 2 0_ 9 2 9 0**Actual answer**367 + 456**Estimated answer**367 + 456+_____ 823**Estimated answer**367 400 + 456+_500 823900**Actual answer**897 + 412**Estimated answer**897 + 412+_____ 1309**Estimated answer**897 900 + 412+_ 400 1309 1300**Actual answer**635 + 342**Estimated answer**635 + 342+_____ 977**Estimated answer**635 600 + 342+_300 977900**Actual answer**3,269 + 1,629**Estimated answer**3,269 +1,629 + _______ 4,898**Estimated answer**3,269 3,000 +1,629+2,000 4,898 5,000**Actual answer**4,092 + 2,808**Estimated answer**4,092 +2,808+_____ 6,900**Estimated answer**4,092 4,000 +2,808+ 3,000 6,900 7,000

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