Question

0.75×0.79-0.25×3×0.39怎样简便计算？

Answer 1

进行简便计算该算式
0.75×0.79-0.25×3×0.39
=0.75x（0.79-0.39）
=0.75x0.4
=0.3
以上为简便方法计算

Answer 2

0.75×0.79-0.25×3×0.39
=0.75×0.79-0.75×0.39
=0.75×（0.79-0.39）
=0.75×0.4
=0.3。

Answer 3

原式=0.75*0.79-（0.25*3）*0.39
=0.75*0.79-0.75*0.39
=0.75*（0.79-0.39）
=0.75*0.4
=0.3

Answer 4

0.75×0.79-0.25×3×0.39简便计算
=0.25x3×0.79-0.25x3×0.39
=0.25x3x(0.79-0.39)
=0.25x4x3
=1x3
=3

Answer 5

用乘法分配律
0.75×0.79-0.25×3×0.39
=0.75×0.79-0.75×0.39
=0.75×(0.79-0.39)
=0.75×0.4
=0.3×2.5×0.4
=0.3×1
=0.3
望采纳，谢谢