Question

1.25✘31✘0.8的简便计算

Answer 1

1.25✘31✘0.8的简便计算

运用乘法交换律使计算简便：

1.25✘31✘0.8
=1.25✘0.8✘31
=1✘31
=31

Answer 2

1.25✘31✘0.8的简便计算过程如下
1.25✘31✘0.8
＝1.25×0.8×31
＝1×31
＝31

Answer 3

简便运算为：利用乘法交换律额额
=1.25×0.8×31
=1×31
=31

Answer 4

1.25x31x0.8
=1.25x0.8x31
=1x31
=31
（乘法交换律，结合律）

Answer 5

1.25*31*0.8
=1.25*0.8*31
=1*31
=31
请参考