三道简算.(+1)+(-2)+...+(+99)+(-100)(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】(-0.7)+1.3+(-0.8)+(-2.1)+0.9
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 14:07:31
![三道简算.(+1)+(-2)+...+(+99)+(-100)(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】(-0.7)+1.3+(-0.8)+(-2.1)+0.9](/uploads/image/z/1242636-60-6.jpg?t=%E4%B8%89%E9%81%93%E7%AE%80%E7%AE%97.%EF%BC%88%2B1%EF%BC%89%2B%EF%BC%88-2%EF%BC%89%2B...%2B%EF%BC%88%2B99%EF%BC%89%2B%EF%BC%88-100%EF%BC%89%EF%BC%88%2B%E5%8D%81%E4%B8%83%E5%88%86%E4%B9%8B%E4%B8%89%EF%BC%89%2B%EF%BC%88-3.36%EF%BC%89%2B%E3%80%90%EF%BC%88%2B7.36%EF%BC%89%2B%EF%BC%88%2B%E5%8D%81%E4%B8%83%E5%88%86%E4%B9%8B%E5%8D%81%E5%9B%9B%EF%BC%89%E3%80%91%EF%BC%88-0.7%EF%BC%89%2B1.3%2B%EF%BC%88-0.8%EF%BC%89%2B%EF%BC%88-2.1%EF%BC%89%2B0.9)
三道简算.(+1)+(-2)+...+(+99)+(-100)(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】(-0.7)+1.3+(-0.8)+(-2.1)+0.9
三道简算.
(+1)+(-2)+...+(+99)+(-100)
(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】
(-0.7)+1.3+(-0.8)+(-2.1)+0.9
三道简算.(+1)+(-2)+...+(+99)+(-100)(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】(-0.7)+1.3+(-0.8)+(-2.1)+0.9
您好:
(+1)+(-2)+...+(+99)+(-100)
=-1-1-1-...-1
=-50
(+十七分之三)+(-3.36)+【(+7.36)+(+十七分之十四)】
=(3/17+14/17)+(7.36-3.36)
=1+4
=5
(-0.7)+1.3+(-0.8)+(-2.1)+0.9
=1.3-(0.7+0.8)+(0.9-2.1)
=1.3-1.5-1.2
=-1.4
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=-1×50=-50
=1+4=5
=0.6+0.1-2.1=0.6-2=-1.4
(+1)+(-2)+...+(+99)+(-100)
=50*(-1)
=-50
3/17+(-3.36)+(7.36+14/17)
=3/17-3.36+7.36+14/17
=(3/17+14/17)+(7.36-3.36)
=1+4
=5
(-0.7)+1.3+(-0.8)+(-2.1)+0.9
=(-0.7)+(-2.1)+(-0.8)+0.9+1.3
=(-3.6)+2.2
=-1.4