(343+685+157)-585
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:2024/10/07 15:24:13
(343+685+157)-585
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怎么简便计算
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怎么简便计算
(343+157)+(685-585)=500+100=600
585+(-144)等于多少
(153+155+157+156+164)/157
巧算(153+155+157+156+164)÷157
(9999+9997+.+9001)-(1+3+.+999)
(+1)+(-2)+(+3)+(-4)++(+99)+(-100)等于几?
计算:(+1)+(-3)+(+5)+(-7)+⋯+(+97)+(-99)
(2010+2008+2006+.+2)-(1+3+5+.+2009)
- |- 0.25 |+(+4分之3)-(-0.125)+|-0.75|
(-2.48)+(+4.33)+(-7.52)+(-4.33)=
1+(-2)+3+(-4)+…+2005+(-2006)+2007+(-2008)+2009
1.(2+4+6+.1984+1986+1988)-(1+3+5+.+1985+1987)=?
(-5)+3