Question

简便计算3.14 X0.68十31.4X0.032？

Answer 1

3.14x0.68+31.4x0.032
=3.14x0.68+3.14x0.32
=3.14x(0.68+0.32)
=3.14x1
=3.14

Answer 2

3.14×0.68+31.4×0.032＝3.14×0.68+3.14×0.32＝3.14×（0.68+0.32）＝3.14×1＝3.14

Answer 3

解:该题用简便方法计算，将31.4化成3.14X10后，再提取题目中相同的小数3.14即可:
3.14Ⅹ0.68十31.4Ⅹ0.032
=3.14X0.68十3.14X10X0.032
=3.14Ⅹ(0.68十0.32)
=3.14X1
=3.14

Answer 4

这道题可以这样简算：
3.14×0.68+31.4×0.032
=3.14×0.68+3.14×0.32
=3.14×（0.68+0.32）
=3.14×1
=3.14

Answer 5

3.14×0.68+31.4×0.032
=3.14×0.68+3.14×0.32
=3.14×（0.68+0.32）
=3.14×1
=3.14
在计算中我们根据积不变的规律把两个乘数统一成3.14（当然也可以统一成0.314）
这样就可以进行简算了。