3000x121000x20用简便方法计算

2025-03-22 02:23:05
推荐回答(1个)
回答1:

3000x121000x20
=3000x20x(100000+20000+1000)
=60000x(100000+20000+1000)
=6000000000+1200000000+60000000
=72600000000