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9.6×3.6+7.2×0.2的简便算法
人气:230 ℃ 时间:2020-04-28 07:50:03
解答
9.6×3.6+7.2×0.2
=9.6×3.6+3.6×0.4
=3.6×(9.6+0.4)
=3.6×10
=36
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