(+0.65)+(-1.9)+(-1.1)+(-13/20)+(+5又2/3)+(-2又1/3)
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/10/04 17:09:54
(+0.65)+(-1.9)+(-1.1)+(-13/20)+(+5又2/3)+(-2又1/3)
1又3/4+(-6.5)+3又3/8+(-1.75)+2又5/8
1又3/4+(-6.5)+3又3/8+(-1.75)+2又5/8
(+0.65)+(-1.9)+(-13/20)+(+5又2/3)+(-2又3/1)
=(+0.65)+(-1.9)+(-13/20)+(+5+2/3)+(-2+1/3)
=0.65-1.9-13/20+5+2/3-2-1/3
=0.65-1.9-0.65+5-2+(2/3-1/3)
=1.1+1/3
=11/10+1/3
=33/30+10/30
=43/30
=1又13/30
1又3/4+(-6.5)+3又3/8+(1.75)+(+2又5/8)
=(1.75+1.75)+(3又3/8+2又5/8)-6.5
=3.5+6-6.5
=3
=(+0.65)+(-1.9)+(-13/20)+(+5+2/3)+(-2+1/3)
=0.65-1.9-13/20+5+2/3-2-1/3
=0.65-1.9-0.65+5-2+(2/3-1/3)
=1.1+1/3
=11/10+1/3
=33/30+10/30
=43/30
=1又13/30
1又3/4+(-6.5)+3又3/8+(1.75)+(+2又5/8)
=(1.75+1.75)+(3又3/8+2又5/8)-6.5
=3.5+6-6.5
=3
找规律填空 1又1/4、3又2/9、5又3/16、7又5/25、9又8/36、11又13/49、( )
1+2又1/6+3又1/13+4又1/20+5又1/30+6又1/42+7又1/56+8又1/72+9又1/90+10又
2又4分之1 3又9分之1 5又16分之2 7又25分之3 7又26分之5 13又49分之8 17又64分之13 ()
[60/(1/2+1/3+1/4+1/5)]/[(5y又13/20+3又2/11+11.35-2又5/33)/5又2/3
2又4/1,3又9/1,5又16/2,7又25/3,11又36/5,3又49/87,17又64/13,( )
(1又2/3+2又3/4+3又4/5+...+97又98/99+98又99/100)/3又1/3+5又2/4+7又3/5
(3又1/3+5又2/4+7又3/5+.+195又97/99+197又98/100)分之(1又2/3+2又3/4+3又4
(1又2/3+2又3/4+~+7又8/9+8又9/10)除以(3又1/3+5又2/4+7又3/5+~+15又7/9+17
(-2005又5/6)+(-2004又2/3)+4010又2/3+(-1又1/2)
(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)
计算:-(1又2/3-4又11/12)-(13又11/18+3又1/4)
计算,3又1/4+(-2又3/5)+5又3/4+(-8又2/5)