33乘以3333加9999乘以8889的简便法怎么算

2025-01-05 10:50:11
推荐回答(1个)
回答1:

33乘以3333加9999乘以8889
=9999x11+9999x8889
=9999x(11+8889)
=(10000-1)x8900
=89000000-8900
=88991100