简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 15:37:44
![简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75](/uploads/image/z/34104-48-4.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E4%B8%A4%E9%81%93%EF%BC%9A%EF%BC%886%E5%88%86%E4%B9%8B1-12%E5%88%86%E4%B9%8B1%EF%BC%89%C3%9724-5%E5%88%86%E4%B9%8B4+7.8%C3%972.5%2B78%C3%970.75)
简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75
简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75
简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75
(6分之1-12分之1)×24-5分之4
=1/6×24-1/12×24-4/5
=4-2-4/5
=2-4/5
=1.2
7.8×2.5+78×0.75
=7.8×2.5+7.8×7.5
=7.8×(2.5+7.5)
=7.8×10
=78