简算怎么做,谢谢

2024-12-28 17:57:25
推荐回答(1个)
回答1:

19×25×4
=19×100
=1900

4×125×8×25
=(4×25)×(8×125)
=100×1000
=100000

50×(23×2)
=50×2×23
=100×23
=2300