79乘625的简便计算方法怎么算?

2025-12-17 19:28:24
推荐回答(2个)
回答1:

79*625

=(80-1)*625
=80*625-625
=4*625*20-625
=2500*20-625
=50000-625
=49375

回答2:

79×625
=(80-1)×125×5
=80×125×5-1×125×5
=10000×5-625
=50000-625
=49375