2+4+8+10+14+16+20+22+…+92+94+98+100
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/25 00:31:10
2+4+8+10+14+16+20+22+…+92+94+98+100
快啊 SOS!
快啊 SOS!
![2+4+8+10+14+16+20+22+…+92+94+98+100](/uploads/image/z/5590907-35-7.jpg?t=2%2B4%2B8%2B10%2B14%2B16%2B20%2B22%2B%E2%80%A6%2B92%2B94%2B98%2B100)
原式=(2+8+14+20+……+92+98)+(4+10+16+22+……+94+100)
=(2+98)*17/2+(4+100)*17/2
=100*17/2+104*17/2
=850+884
=1734
=(2+98)*17/2+(4+100)*17/2
=100*17/2+104*17/2
=850+884
=1734
2+4+8+10+14+16+20+22+…+92+94+98+100
巧求和:2+4+8+10+14+16+20+22+.+92+94+98+100=
2+4+8+10+14+16+20+22+...+92+94+98+100=?
2+4+8+10+14+16+20+22+...+92+94+98+100=这题怎么解?
2+4+8+10+14+16+20+92+94+98+100等于多少?过
高斯定律数学题2+4+8+10+14+16+…+92+94+98+100=?1-2-3+4+5-6-7+8+9-10-1
2+4+6+8+10+12+14+16+18+.92+94+96+98+100=?用简便方法怎么算
2+4+6+8+10……+92+94+96+98+100=?
-2+4-6+8-10+12-14+16-18+20……-98+100
计算:100-98+96-94+92-90+……+8-6+4-2=( )
100-98+96-94+92-90+…+8-6+4-2=______.
2004+6-8+10+12-14+16+18-20+22+24-26+28+……+96-98+100