Question

3.1×6.4+13.8×3.2怎么简便运算？

Answer 1

这道题需要二次化简
具体计算解答过程如下所示
3.1×6.4+13.8×3.2
=3.1×2×3.2+13.8×3.2
=6.2×3.2+13.8×3.2
=(6.2+13.8)×3.2
=20×3.2
=64

Answer 2

解:3.1Ⅹ6.4十13.8Ⅹ3.2
=3.1X2Ⅹ3.2十13.8Ⅹ3.2
=6.2Ⅹ3.2十13.8Ⅹ3.2
=(6.2十13.8)Ⅹ3.2
=20X3.2
=64

Answer 3

3.1*6.4+13.8*3.2=3.1*3.2*2+13.8*3.2=
3.2*（6.2+13.8）=3.2*20=64

Answer 4

3.1×6.4+13.8×3.2=6.2×3.2+13.8×3.2=20×3.2=64

Answer 5

3.1x6.4+13.8x3.2
=3.1x2x3.2+13.8x3.2
=6.2x3.2+13.8x3.2
=(6.2+13.8)x3.2
=20x3.2
=64