乘法分配律练习题

乘法分配律：axb+axc=ax（b+c）或(a+b)xc=axc+bxc

例如：79x63+79x37 (8+100)x125

=79x(63+37) =8x125+100x125

=79x100 =1000+12500

=7900 =13500