0.87乘9.9的简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 23:43:20
![0.87乘9.9的简便运算](/uploads/image/z/599260-4-0.jpg?t=0.87%E4%B9%989.9%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
0.87乘9.9的简便运算
0.87乘9.9的简便运算
0.87乘9.9的简便运算
=0.87×(10-0.1)
=0.87×10-0.87×0.1
=8.7-0.087
=8.613
0.87*9.9
=0.87*(10-0.1)
=0.87*10-0.87*0.1
=8.7-0.087
=8.613
0.87*(10-0.1)
=0.87*10+0.87*0.1
=8.7-0.087
=8.613
0.87×(10-0.1)=8.613 可以使用分配律