9.9×25用简便方法计算

9.9×25用简便方法计算,
2024-11-27 17:51:59
推荐回答(2个)
回答1:

9.9×25
=(10-0.1)×25
=10×25-0.1×25
=250-2.5
=247.5

回答2:

9.9×25
=(10-0.1)x25
=10x25-0.1x25
=250-2.5
=247.5
希望能帮到你!