一道初一的负数计算题!十万火急求援助!(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 18:06:18
![一道初一的负数计算题!十万火急求援助!(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)](/uploads/image/z/11507662-46-2.jpg?t=%E4%B8%80%E9%81%93%E5%88%9D%E4%B8%80%E7%9A%84%E8%B4%9F%E6%95%B0%E8%AE%A1%E7%AE%97%E9%A2%98%21%E5%8D%81%E4%B8%87%E7%81%AB%E6%80%A5%E6%B1%82%E6%8F%B4%E5%8A%A9%21%28-1%29+%2B+%28%2B2%29+%2B+%28-3%29+%2B%28%2B4%29+%2B...%2B+%28-99%29%2B+%28%2B100%29)
一道初一的负数计算题!十万火急求援助!(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)
一道初一的负数计算题!十万火急求援助!
(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)
一道初一的负数计算题!十万火急求援助!(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)
(-1) + (+2) =1
(-3) +(+4) =1
(-5) +(+6) =1
……
(-99)+ (+100)=1
1到100总共50项(100/2=50)
所以:(-1) + (+2) + (-3) +(+4) +...+ (-99)+ (+100)=50
=1+1+1+1....一共是50个
=50
(-1) + (+2) = 1
(-3) + (+4) = 1
……
(-99)+ (+100) = 1
一共是50对。
总的结果就是 50。