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Two ways of answering:

Nearest ten to 16 = 20, nearest ten to 13 = 10 so sum of neaest tens = 20 + 10 = 30

Alternative: 16 + 13 = 29. Nearest ten to 29 = 30.

In this case the two answers agree, but they need not.

eg 14 + 13.

Nearest at first step gives 10 + 10 = 20

Nearest at last step gives 14 + 13 = 27 which goes to 30.

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15y ago
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Q: Calculate to the nearest 10 the sum of 16 and 13?
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