Question

简便运算:0.25X0.78X4？

对这道题提出一个疑问

Answer 1

简便运算:0.25X0.78X4，，，，利用乘法的交换律进行计算
0.25X0.78X4
= 0.25x4x0.78
=1x0.78
=0.78

Answer 2

简便运算，0.25×0.78×4，这道题的姐妹方法是先用0.25×4等于1然后再用1×0.78就=0.78。

Answer 3

0.25×0.78×4=0.25×4×0.78=1×0.78=0.78,用乘法交换律

Answer 4

0.25×0.78×4的简便运算是：
（0.25×4）×0.78
=1×0.78
=0.78

Answer 5

原式=0.25x4x0.78=1ⅹ0.78=0.78