\(≥▽≤)/~谢谢/////////////////////30分,先做再加,谁写的好就给谁哦①(-2)×(-7)×(+5)×(-7分之1)②(-9分之8)×0.25×(-4分之1)×9
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 07:17:57
![\(≥▽≤)/~谢谢/////////////////////30分,先做再加,谁写的好就给谁哦①(-2)×(-7)×(+5)×(-7分之1)②(-9分之8)×0.25×(-4分之1)×9](/uploads/image/z/3845042-26-2.jpg?t=%5C%28%E2%89%A5%E2%96%BD%E2%89%A4%29%2F%7E%E8%B0%A2%E8%B0%A2%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F30%E5%88%86%2C%E5%85%88%E5%81%9A%E5%86%8D%E5%8A%A0%2C%E8%B0%81%E5%86%99%E7%9A%84%E5%A5%BD%E5%B0%B1%E7%BB%99%E8%B0%81%E5%93%A6%E2%91%A0%EF%BC%88-2%EF%BC%89%C3%97%EF%BC%88-7%EF%BC%89%C3%97%EF%BC%88%EF%BC%8B5%EF%BC%89%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B1%EF%BC%89%E2%91%A1%EF%BC%88-9%E5%88%86%E4%B9%8B8%EF%BC%89%C3%970.25%C3%97%EF%BC%88-4%E5%88%86%E4%B9%8B1%EF%BC%89%C3%979)
\(≥▽≤)/~谢谢/////////////////////30分,先做再加,谁写的好就给谁哦①(-2)×(-7)×(+5)×(-7分之1)②(-9分之8)×0.25×(-4分之1)×9
\(≥▽≤)/~谢谢/////////////////////
30分,先做再加,谁写的好就给谁哦
①(-2)×(-7)×(+5)×(-7分之1)
②(-9分之8)×0.25×(-4分之1)×9
\(≥▽≤)/~谢谢/////////////////////30分,先做再加,谁写的好就给谁哦①(-2)×(-7)×(+5)×(-7分之1)②(-9分之8)×0.25×(-4分之1)×9
①(-2)×(-7)×(+5)×(-7分之1)
=[(-2))×(+5)]×[(-7分之1)×(-7)]
=-10*1
=-10
②(-9分之8)×0.25×(-4分之1)×9
=[(-9分之8)×9]×[0.25×(-4分之1)]
=-8*(-1/16)
=1/2