Question

简便运算:0.25X0.78X4？可以提什么问题

Answer 1

简便运算: 0.25X0.78X4？
0.25X0.78X4

=0.25x4 x0.78
=1 x0.78
=0.78

Answer 2

简便计算如下：
0.25*0.78*4=0.25*4*0.78=1*0.78=0.78。

Answer 3

0.25×0.78×4
=0.78×0.25x4(乘法交换律)
=0.78×(0.25x4)(乘法结合律)
=0.78×1
=0.78

Answer 4

解：
0.25x0.78x4
=(0.25x4)x0.78
=1x0.78
=0.78

类似题目主要考虑的是4x25=100，将题化简这类就可以了

Answer 5

0.25×0.78×4
＝0.25×4×0.78
＝1×0.78
＝0.78
可以提的问题是该简便运算运用了什么运算？乘法交换律