23+19=50-17=11.7+13=2.2×0.2=-=×=÷=+=+=÷=+=15×=10-0.6=28.4÷0.4=-=
网友回答
解:23+19=42??????? 50-17=33?????? 11.7+13=24.7??????? 2.2×0.2=0.44????????? -=
×=???????÷=???????+=???????????+=1???????????????? ÷=
=????? 15×=9???????10-0.6=9.4????????? 28.4÷0.4=71?????????? -=
解析分析:本题据计算法则计算即可.
点评:完成本题要细心,找出每组数据的特点,快速准确的得出题目.