Question

用乘法分配律计算，4.3×0.23 +4.3×0.76+0.43 ×0.1？

Answer 1

因为0.43×0.1=4.3×0.01，所以原式等于4.3×0.23+4.3×0.76+4.3×0.01，运用乘法分配律逆运算就是有4.3×（0.23+0.76+0.01）=4.3

Answer 2

4.3×0.23＋4.3×0.76＋0.43×0.1
＝4.3×0.23＋4.3×0.76＋4.3×0.01
＝4.3×（0.23＋0.76＋0.01）
＝4.3×1
＝4.3