(1.25一0.125)x81这道题怎样简便算

(1.25一0.125)x81这道题怎样简便算
2025-04-06 12:07:25
推荐回答(1个)
回答1:

原式
=(1.25-0.125)*(80+1)
=(1.25-0.125)*80+(1.25-0.125)
=100-10+1.125
=91.125
结果是91.125