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6.4X0.25十3.6÷4用简便方法计算
人气:135 ℃ 时间:2020-05-10 04:19:24
解答
6.4X0.25十3.6÷4
=6.4X0.25十3.6X0.25
=0.25X(6.4+3.6)
=0.25X10
=2.5
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