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巧算 12.5 * (36-7 1/5)除以3.6
人气:361 ℃ 时间:2020-02-03 02:13:06
解答
12.5 * (36-7 又1/5)除以3.6
=12.5*36÷3.6-12.5*7.2÷3.6
=12.5*10-12.5*2
=125-25
=100
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