12.5X(20十0.8)用脱式计算怎么写?

2025-01-27 13:39:35
推荐回答(3个)
回答1:

12.5×(20+0.8)
=12.5×20+12.5×0.8
=250+10
=260

回答2:

12.5*(20+0.8)
=12.5*20+12.5*0.8
=250+10
=260

回答3:

12.5×(20+0.8)
=12.5×20+12.5×0.8
=250+12.5×(1-0.2)
=250+12.5-2.5
=260