Use rounding or compatible numbers to estimate the sum of 52 + 39

asked Nov 27, 2017 62.6k views

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Round 52 to 50 and 39 to 40
50+40=90

Joshfarrant answered Nov 29, 2017

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52 would turn into 50 and 39 would turn into 40. 50 + 40 = 90.

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