Question

What is the estimate of 63+42

Answer 1

Firstly, round 63 and you get 60, then, round 42 and you get 40. Finally, add 60 and 40. Your answer will be 100. 

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    Helpingothers

Answer 2

the estimate of 63+42 is 100 because you round to the nearest tenth 

63→ 60 & 42→ 40 so you add them together and you get 100