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12.5 * (36-7 1/5)除以3.6 巧算
人气:347 ℃ 时间:2020-04-06 03:25:05
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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