1.8乘(5.4-1.8)除以0.9怎样简便计算
人气:269 ℃ 时间:2019-12-25 01:39:20
解答
1.可以先1.8除以0.9得2,然后用2乘以5.4-1.8
2.可将0.9除到括号里边得6-2=4,在和1.8相乘
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