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1.25x0.5x2.5x64怎么简算
人气:371 ℃ 时间:2020-05-21 06:12:51
解答
1.25x0.5x2.5x64
=5/4×1/2×5/2×64
=5×5/(64÷4÷2÷2)
=25/4
=6.25
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