计算下面各题(怎样简便怎样算):
18.3-7.4-2.6
1-
÷
+
(4×0.25-
)÷
0.75×16+
×5-75%
人气:492 ℃ 时间:2020-06-25 19:55:00
解答
(1)18.3-7.4-2.6=18.3-(7.4+2.6)=18.3-10=8.3;(2)1-815÷45+23=1-23+23=13+23=1;(3)(4×0.25-35)÷45=(1-35)÷45=25÷45=12;(4)0.75×16+34×5-75%=0.75×16+0.75×5-0.75=0.75×(16+5-1)=0.75×...
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