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Mathematics, 26.06.2019 06:00 weisenbergertay5779

Use front-end estimation to estimate the sum. 13.3+2.8+5.6 a. about 20 b. about 23 c. about 22 d. about 25

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Use front-end estimation to estimate the sum. 13.3+2.8+5.6 a. about 20 b. about 23 c. about 22 d. ab...
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