Question

用乘法运算定律计算125x32_

运用乘法的运算定律计算题 如下
125x32-125x24
81+9x91
记住是乘法运算定律~
格式
=xx
=xx
=xxx

Answer 1

125x32-125x24
=125x(32-24)
=125x8
=1000
81+9x91
=(91-10)+9x91
=10x91-10
=910-10
=900