算式4.03/12.5怎么用简便方法_数学解答

算式4.03/12.5怎么用简便方法

人气：408 ℃　时间：2020-03-24 06:07:00

解答

4.03÷12.5
=4.03×0.8÷(12.5×0.8)
=4.03×0.8
=(4+0.03)×0.8
=4×0.8+0.03×0.8
=3.2+0.024
=3.224