Question

1.2x50.4-0.12x4怎么简便计算？

Answer 1

这属于简单的乘法计算题目，过程如下：
1.2x50.4-0.12x4
＝1.2x50.4一1.2x0.4
＝1.2x（50.4一0.4）
＝1.2x50
＝60

Answer 2

简便计算过程如下：
1.2X50.4-0.12X4
=1.2X50.4-1.2X0.4
=1.2X（50.4-0.4）
=1.2X50
=60

Answer 3

1.2X50.4-0.12X4
=1.2X50.4-1.2X0.4
=1.2X(50.4-0.4)
=1.2X50
=60。

Answer 4

这是小学数学关于乘法分配律扩大逆运用的简便计算的问题。即:1.2ⅹ50.4-0.12ⅹ4=1.2ⅹ50.4-1.2ⅹ0.4=（50.4-0.4）ⅹ1.2=50ⅹ1.2=50ⅹ1+50ⅹ0.2=50+10=60

Answer 5

1.2×50.4-0.12x4
=1.2×50.4-1.2x0.4(积不变的规律)
=1.2×(50.4-0.4)(乘法分配律)
=1.2×50
=60