1.25×3.2 求简便运算,谢谢!

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/04 03:59:52

1.25×3.2 求简便运算,谢谢!

125x8x4x0.001
= 1000x4x0.001
= 4000x0.001
=4

1×3.2+0.25×3.2=4 0.25=1/4

1.25x3+1.25x0.2

1.25*8*0.4