1:(36963-369.63)除以(24642-246.42) 2:1999分之1+1999分之2+1999分之3+……+1999分之1998 3:(1+1.8)+(2+1.8乘2)+(3+1.8乘3)+……+(100+1.8乘100) 4:(2.17+5.49+3.81)乘(5.49+2.17+9.2)-(3.81+2.17+5.49+9
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 13:19:14
![1:(36963-369.63)除以(24642-246.42) 2:1999分之1+1999分之2+1999分之3+……+1999分之1998 3:(1+1.8)+(2+1.8乘2)+(3+1.8乘3)+……+(100+1.8乘100) 4:(2.17+5.49+3.81)乘(5.49+2.17+9.2)-(3.81+2.17+5.49+9](/uploads/image/z/432384-24-4.jpg?t=1%EF%BC%9A%EF%BC%8836963-369.63%EF%BC%89%E9%99%A4%E4%BB%A5%EF%BC%8824642-246.42%EF%BC%89+2%EF%BC%9A1999%E5%88%86%E4%B9%8B1%2B1999%E5%88%86%E4%B9%8B2%2B1999%E5%88%86%E4%B9%8B3%2B%E2%80%A6%E2%80%A6%2B1999%E5%88%86%E4%B9%8B1998+3%EF%BC%9A%EF%BC%881%2B1.8%EF%BC%89%2B%EF%BC%882%2B1.8%E4%B9%982%EF%BC%89%2B%EF%BC%883%2B1.8%E4%B9%983%EF%BC%89%2B%E2%80%A6%E2%80%A6%2B%EF%BC%88100%2B1.8%E4%B9%98100%EF%BC%89+4%EF%BC%9A%EF%BC%882.17%2B5.49%2B3.81%EF%BC%89%E4%B9%98%EF%BC%885.49%2B2.17%2B9.2%EF%BC%89-%EF%BC%883.81%2B2.17%2B5.49%2B9)
1:(36963-369.63)除以(24642-246.42) 2:1999分之1+1999分之2+1999分之3+……+1999分之1998 3:(1+1.8)+(2+1.8乘2)+(3+1.8乘3)+……+(100+1.8乘100) 4:(2.17+5.49+3.81)乘(5.49+2.17+9.2)-(3.81+2.17+5.49+9
1:(36963-369.63)除以(24642-246.42) 2:1999分之1+1999分之2+1999分之3+……+1999分之1998 3:(1+1.8)+(2+1.8乘2)+(3+1.8乘3)+……+(100+1.8乘100) 4:(2.17+5.49+3.81)乘(5.49+2.17+9.2)-(3.81+2.17+5.49+9.2)乘(2.17+5.49)这些题目都要简便运算哦!题目复杂了一点不好意思,但是如果回答的都对了,嘻嘻……
1:(36963-369.63)除以(24642-246.42) 2:1999分之1+1999分之2+1999分之3+……+1999分之1998 3:(1+1.8)+(2+1.8乘2)+(3+1.8乘3)+……+(100+1.8乘100) 4:(2.17+5.49+3.81)乘(5.49+2.17+9.2)-(3.81+2.17+5.49+9
1:=3*12321*(1-0.01)/[2*12321*(1-0.01)],约分,=3/2
2:首尾相加,=(1999分之1+1999分之1998)+.+(1999分之999+1999分之1000)=999
3:=(1+1.8)*(1+2+...+100)=2.8*101*50(首尾相加)=14140
4:=(2.17+5.49)^2+(3.81+9.2)*(2.17+5.49)+3.81*9.2-[(2.17+5.49)^2+(3.81+9.2)*(2.17+5.49)]
=3.81*9.2=35.052
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