(12+3.2)×2.5+1÷0.01
=(4×3+4×0.8)×2.5+1÷(100分之1)
=(3+0.8)×4×2.5+100
=3.8×10+100
=38+100
=138为什么要把0.01拆分成100分之1？当然直接算1÷0.01就等于100
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