Question

Estimate the sum or the diffrence. Use the benchmarks 0,1/2,and 1.

23/40-11/30

A.0
B.1
C.1/2
I think its C
The exact answer would be 5/24. Which choice do you think is closest to that answer?
if estimating, you'd use 1/2 - 1/2 = 0

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