(291-38*3.5-35.5)/3.5的简便算法

Question

(291-38*3.5-35.5)/3.5的简便算法

Answer 1

(291-38*3.5-35.5)/3.5=(290.5+0.5-38*3.5-35-0.5)/3.5=(83*3.5-38*3.5-10*3.5)/3.5=(83-38-10)*3.5=35/3.5=10 绝对原创!
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