rob35
rob35
29-08-2016
Mathematics
contestada
Explain how to estimate 368+231 two differ ways
Respuesta :
xxeitharredstar
xxeitharredstar
29-08-2016
3 + 2 = 5
6 + 3 = 9
8 + 1 = 9
So the answer is 599
Second way:
round down the digits into hundreds, tens, and ones then get the sum of those.
300 + 200 = 500
60 + 30 = 90
8 + 1 = 9
500 + 90 + 9 is
599
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