98*47 简便计算

问题描述:

98*47 简便计算

100*47=4700 100-2=98 2*47=94 4700-94=4606 98*47=4606

98*47
=(100-2)*47
=100*47-2*47
=4700-94
=4606

98*47=(100-2)*(50-3)=100*50-300-100+6=4606

98*47
=(100-2)×47
=100×47-2×47
=4700-94
=4606