来自翟凤文的问题
计算下面各题(怎样简便怎样算):18.3-7.4-2.61-815÷45+23(4×0.25-35)÷450.75×16+34×5-75%
计算下面各题(怎样简便怎样算):
18.3-7.4-2.6
1-815÷45+23
(4×0.25-35)÷45
0.75×16+34×5-75%
1回答
2020-04-08 01:18
计算下面各题(怎样简便怎样算):18.3-7.4-2.61-815÷45+23(4×0.25-35)÷450.75×16+34×5-75%
计算下面各题(怎样简便怎样算):
18.3-7.4-2.6
1-815÷45+23
(4×0.25-35)÷45
0.75×16+34×5-75%
(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×...