50×47+49×47+47怎么用运算定律计算
问题描述:
50×47+49×47+47怎么用运算定律计算
答
50×47+49×47+47
=(50+49+1)×47
=100×47
=4700
答
50×47+49×47+47
=(50+49+1)×47
=100×47
=4700 这是乘法分配率
答
47×(50+50-1+1)
答
(50+49+1)*47=100*47=4700
答
50×47+49×47+47
=50×47+49×47+1×47
=(50+49+1)×47
=100×47
=4700
答
47×(50+49+1)=4700