98-4.2×0.5-0.9简便计算
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答案95,简便计算98-4.2×0.5-0.9 =98-2.1x2x0.5-0.9 =98-2.1-0.9 =98-3=95,运用加减法的结合律
咨询记录 · 回答于2023-02-20
98-4.2×0.5-0.9简便计算
好了吗
答案95,简困禅便计汪绝尘算98-4.2×0.5-0.9 =98-2.1x2x0.5-0.9 =98-2.1-0.9 =98-3=95,宏李运用加减法的结合律
答案95,简便计算98-4.2×0.5-0.9 =98-2.1x2x0.5-0.9 =98-2.1-0.9 =98-(宏李2.1+0.9) =98-3 =95,运用加减法的结合困禅律汪绝尘
好了
4.2拆分,4.2=2.1x2,2x0.5=1,然后计算2.1+0.9=3,再计算98-3=95
16.5-(4.5-2.3)
16.5-(4.5-2.3)=16.5-4.5+2.3=12+2.3=14.3
这三道题麻烦您看一下
在吗
8X➗(1.8+3)=1,解:8X➗4.8=1,8
8X➗(1.8+3)=1,解:8X➗4.8=1,燃灶衡辩棚8X=1x4.8,皮做8X=4.8,X=4.8➗8,X=0.6
1.8+3=4.8