(1)0.4-(-4/1)+6/1(2)3/1-(-6/5)+3/2(3)3/1+(-5/1)+1+3/2(4)27-18+(-7)-32
来源:百度知道 编辑:UC知道 时间:2024/05/26 20:39:11
(5)0.5+(-4/1)-(2.75)+2/1(6)33.1-(-22.9)+(-10.5)(7)(-8)-(-15)+(-9)-(-12)(8)-3/2+(-6/1)-(-4/1)-2/1(9)5/3-2/3+(-4/11)+4/13
(1)0.4-(-4/1)+6/1
=0.4+1/4+1/6
=24/60+15/60+10/60
=49/60 (六十分之四十九)
(2)3/1-(-6/5)+3/2
=1/3+5/6+2/3
=2/6+5/6+4/6
=11/6(六分之十一)
(3)3/1+(-5/1)+1+3/2
=1/3-1/5+1+2/3
=5/15-3/15+15/15+10/15
=27/15(十五分之二十七)
(4)27-18+(-7)-32
=27-18-7-32
=-30
(5)0.5+(-4/1)-(2.75)+2/1
=0.5-0.25-2.75+0.5
=-2
(6)33.1-(-22.9)+(-10.5)
=33.1+22.9-10.5
=45.5
(7)(-8)-(-15)+(-9)-(-12)
=-8+15-9+12
=10
(8)-3/2+(-6/1)-(-4/1)-2/1
=-2/3-1/6+1/4-1/2
=-8/12-2/12+3/12-6/12
=-13/12(负十二分之十三)
(9)5/3-2/3+(-4/11)+4/13
=3/5-3/2-11/4+13/4
=12/20-30/20-55/20+65/20
=-8/20
=-2/5(负五分之二)
(1)0.4-(-4/1)+6/1
=0.4+4/1+6/1
=5/2+12/3+12/2
=5/2+12/5
=60/24+60/25
=60/49
(2)3/1-(-6/5)+3/2
=3/1+6/5+3/2
=6/2+6/5+6/4
=6/11
(3)3/1+(-5/1)+1+3/2
=6/1-5/1+1+3/2
=30/5-30/6+3
(2/1+3/1+4/1+5/1)乘(2/1+3/1+4/1+5/1+6/1)减(2/1+3/1+4/1+5/1+6/1)乘(2/1+3/1+4/1+5/1)等于多少
1,8,9,4,( ),1/6
1 8 9 4 () 1/6
计算1+1/2+(1/3-1)+1/4+1/5+(1/6-1/2)+1/7+1/8+(1/9/1/3)......
小学生数学题目~~~~帮帮忙(1-1/2)+(1-1/3)+(1-1/4)+(1-1/5)+(1-1/6)+(1-1/7
已知1-1/2=1/2 1/2-1/3=1/6 1/3-1/4=1/12 那么1/6-1/7=()1/12-1/13=()1/2+1/6+1/12=()
1+1/2+1/3+1/4+1/5+1/6+.........+1/n极限多少?(过程)
1+(1+2)/1+(1+2+3)/1+(1+2+3+4)/1+……+(1+2+3+4+5+6……+50)/1如何解
(1/2—1/4+1/6—1/8+1/10+……+1/198—1/200)/1/51+1/52+……1/100=?
帮忙解决问题:1/(1/1*1/2+1/3*1/4+1/5*1/6+…1/2007*1/2008)