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计算下面各题,能简算的要简算.23+15+45+134-511-61118×58+18×41+1845÷47×54-126÷310-310÷638×[(12+25)×23].
题目详情
计算下面各题,能简算的要简算.
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▼优质解答
答案和解析
(1)23+15+45+13,=(23+13)+(15+45),=1+1,=2;(2)4-(511+611),=4-1,=3;(3)18×58+18×41+18,=18×(58+41+1),=18×100,=12.5;(4)45÷47×54-12,=45×54×74-12,=1×74-12,=74-12,=54;(...
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