用简便方法计算下面个题12×25?

2025-01-01 07:04:53
推荐回答(2个)
回答1:

方法一:
12×25
=(3×4)×25
=3×(4×25)
=3×100
=300
方法二
12×25
=(10+2)×25
=10×25+2×25
=250+50
=300

回答2:

可以把25拆成5乘以5,再先用12乘以5然后再乘以5
=60*5
=300