请帮忙看看这两道题如何用乘法结合律和交换律灵活计算:25×24 25×32×125
问题描述:
请帮忙看看这两道题如何用乘法结合律和交换律灵活计算:25×24 25×32×125
答
25X24 =25X4X6=(25X 4)X6=100X6=600
25X32X125=25X4X8X125=(25X4)X(8X125)=100X1000=100000