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简便算法7.2+8*7.2*0.125
人气:212 ℃ 时间:2020-01-29 17:02:15
解答
7.2+8×7.2×0.125
=7.2+8×0.125×7.2
=7.2+1×7.2
=7.2+7.2
=14.4
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