Question

6.79×4.3+67.9×0.57

Answer 1

答: 6.79×4.3+67.9×0.57
=67.9×0.43+67.9×0.57
=67.9×（0.43+0.57）
=67.9×1
=67.9
（望采纳）

Answer 2

因为6.79×4.3=67.9×0.1×4.3=67.9×0.43，所以原式等于67.9×0.43+67.9×0.57，运用乘法分配律逆运算就是有67.9×（0.43+0.57）=67.9

Answer 3

6.79x4.3十67.9x0.57＝67.9x0.43十67.9x0.57＝67.9x（0.43十0.57）＝67.9x1＝67.9。

Answer 4

答：解这道题的关键在于乘法分配律的巧妙运用，步骤请参考如下
原式=6.79×（4.3+10×0.57）
=6.79×（4.3+5.7）
=6.79×10
=67.9

Answer 5

6.79*4.3+67.9*0.57
=6.79*4.3+6.79*5.7
=6.79（4.3+5.7）
=6.79*10
=67.9