Question

简便计算3.14 X0.68十31.4X0.032？

Answer 1

3.14×0.68+31.4×0.032
=3.14×0.68+3.14×10×0.032
=3.14×0.68+3.14×0.32
=3.14×（0.68+0.32）
=3.14×1=3.14

Answer 2

简便算法过程如下
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

3.14x0.68+31.4x0.032
=3.14x0.68+3.14x10x0.032
=3.14x0.68+3.14x0.32
=3.14x（0.68+0.32）
=3.14x1
=3.14

Answer 4

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
分析：31.4×0.032 和 3.14×0.32 的计算结果一样，因为两个因数相乘，如果要使结果相同这个因数扩大10倍或者多少倍，那个因数也要相应的缩小10倍或者多少倍。

Answer 5

3.14×0.68+31.4×0.032
=3.14×0.068×10+31.4×0.032
=（3.14×10)×0.068+31.4×0.032
=31.4×0.068+31.4×0.032
=31.4×（0.068+0.032)
=31.4×0.1
=3.14