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2018-01-24 · 知道合伙人教育行家
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简便计算
(3.72×4/7+6.28÷1.75)×1/8
=(3.72x4/7+6.28x4/7)x1/8
=4/7x(3.72+6.28)x1/8
=4/7x10x1/8
=40/7x1/8
=5/7
(3.72×4/7+6.28÷1.75)×1/8
=(3.72x4/7+6.28x4/7)x1/8
=4/7x(3.72+6.28)x1/8
=4/7x10x1/8
=40/7x1/8
=5/7
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