888*87+112*99-112*2怎么简便计算
问题描述:
888*87+112*99-112*2怎么简便计算
答
888*87+112*99-112*2
=888×87+112×(99-2)
=888×87+112×(87+10)
=888×87+112×87+112×10
=87×(888+112)+1120
=87×1000+1120
=87000+1120
=88120