Use compatible numbers to estimate the sum of 83 + 34.

80 + 30 then add 80 + 30=110 then add the numbers you left out 3+ 4 = 7 and you get 117
or you can round up 90 + 40 90 + 40=130 then you subtract the numbers you added on 90 - 83 = 7 40 - 34 = 6 then you add those and subtract from 130 and you get 11Answer here

Answered by akamoneygirl | 2024-06-10

To estimate the sum of 83 + 34, you can round 83 down to 80 and 34 down to 30, which gives an estimate of 110. Alternatively, rounding 83 up to 90 and 34 up to 40 gives an estimate of 130. Both methods provide a quick and effective way to approximate the sum.
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Answered by akamoneygirl | 2024-12-21