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

50×47+49×47+47
=(50+49+1)×47
=100×47
=4700

50×47+49×47+47
=(50+49+1)×47
=100×47
=4700 这是乘法分配率

47×(50+50-1+1)

(50+49+1)*47=100*47=4700

50×47+49×47+47
=50×47+49×47+1×47
=(50+49+1)×47
=100×47
=4700

47×(50+49+1)=4700