2015个2.5×2014个0.4用简便方法计算

2025-04-04 18:00:03
推荐回答(1个)
回答1:

2015个2.5×2014个0.4
=2014个2.5×2014个0.4×2.5
=2014个(2.5×0.4)×2.5
=2014个1×2.5
=1×2.5
=2.5