计算下面各题。(能简算的要简算)0.75×1.6+1.4×0.75+7.5-计算

黄建秋 11-28 08:29:16 101

0.75×1.6+1.4×0.75+7.5=0.75×(1.6+1.4)+7.5=2.25+7.5=9.75

亲,满意请采纳!

用合并0.75×(1.6+1.4+1)=0.75×4=3

可以例一下数式吗?

前面算错了
0.75×1.6+1.4×0.75+7.5= 0.75×(1.6+1.4+10)=0.75×13=9.75

0.75(1.6+1.4)+7.5=22.5+7.5=30

应该是2.25+7.5=9.75