2+4+6+······+98+100
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/10 10:28:48
2+4+6+······+98+100
170/125
5分之4/(5分之4-5分之2*5分之4)
9999*2222+3333*3334
170/125
5分之4/(5分之4-5分之2*5分之4)
9999*2222+3333*3334
2+4+6+······+98+100
=(2+100)*50/2
=102*25
=2550
170/125
=(125+45)/125
=125/125+45/125
=1+9/25
=34/25
5分之4/(5分之4-5分之2*5分之4)
=(5分之4)/[(5分之4)*(1-5分之2)]
=(5分之4)/[(5分之4)*5分之3]
=1/(5分之3)
=3分之5
9999*2222+3333*3334
=3333*3*2222+3333*3334
=3333*6666+3333*3334
=3333*(6666+3334)
=3333*10000
=33330000
=(2+100)*50/2
=102*25
=2550
170/125
=(125+45)/125
=125/125+45/125
=1+9/25
=34/25
5分之4/(5分之4-5分之2*5分之4)
=(5分之4)/[(5分之4)*(1-5分之2)]
=(5分之4)/[(5分之4)*5分之3]
=1/(5分之3)
=3分之5
9999*2222+3333*3334
=3333*3*2222+3333*3334
=3333*6666+3333*3334
=3333*(6666+3334)
=3333*10000
=33330000
2+4+6+······+98+100
简算 100 -98 + 96 - 94 + 92 -90+··········+4-2
计算1-2+3-4+5-6+······-98+99=
(2+4+6+8+······+100)—(1+3+5+7+······+99)等于几
计算:(2+4+6+8+···+100)-(1+3+5+···+99)
4···············
100+99-98-97+96+95+·······+4+3-2-1怎么做?
1+2+3+4·······+98+99等于多少
2*4分之2+4*6分之2+6*8分之2+······+98*100分之2
1+3+5+···45+47+49+50+51+53+55+···+95+97+99-2-4-6-···-96-98-1
1+2+3+······+98+99+100=?
怎样快速算出1+2+3+4+5······+98+99+100?