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18 October, 07:32

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

23/40-11/30

A 0

B 1

C 1/2

+2
Answers (1)
  1. 18 October, 07:38
    0
    Hmm

    23/40 is like 1/2

    11/30 is between 1/2 and 0, about 1/3

    so

    1/2-1/3 is hmm

    somewhere between 1/2 and 0, closer to 0 tho

    A is answer
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