7/8+3/4-11/12简便计算急
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/07/10 14:27:08
7/8+3/4-11/12简便计算急
5/9+7/12+4/9
=
9/10-(2/5+1/4)
=
7/8-5/12+5/6
=
4/5+3/10-11/20
=
3/5-(5/8-1/6)
=
3/4-2/7+1/4+2/7
=、
11/9+3/10-2/9+7/10
=
22/15+7/13+8/15-7/13
=
5/9+7/12+4/9
=
9/10-(2/5+1/4)
=
7/8-5/12+5/6
=
4/5+3/10-11/20
=
3/5-(5/8-1/6)
=
3/4-2/7+1/4+2/7
=、
11/9+3/10-2/9+7/10
=
22/15+7/13+8/15-7/13
=
![7/8+3/4-11/12简便计算急](/uploads/image/z/3190339-19-9.jpg?t=7%2F8%2B3%2F4-11%2F12%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E6%80%A5)
5/9+7/12+4/9
=(5/9+4/9)+7/12
=9/9+7/12
=1+7/12
=1又7/12
9/10-(2/5+1/4)
=9/10-2/5-1/4
=9/10-4/10-1/4
=5/10-1/4
=1/2-1/4
=12/4-1/4
=1/4
7/8-5/12+5/6
=7/8-5/12+10/12
=7/8+5/12
=21/24+10/24
=31/24
4/5+3/10-11/20
=4/5+6/20-11/20
=4/5-5/20
=16/20-5/20
=11/20
3/5-(5/8-1/6)
=3/5-(15/24-4/24)
=3/5-11/24
=72/120-55/120
=17/120
3/4-2/7+1/4+2/7
=3/4+1/4-(2/7+2/7)
=1
11/9+3/10-2/9+7/10
=(11/9-2/9)+(3/10+7/10)
=9/9+10/10
=1+1
=2
22/15+7/13+8/15-7/13
=(22/15+8/15)+(7/13-7/13)
=30/15
=2
再问: 还有大题目上那道,谢谢
再答: 7/8+3/4-11/12
=21/24+1/24-22/24
=22/24-22/24
=0
=(5/9+4/9)+7/12
=9/9+7/12
=1+7/12
=1又7/12
9/10-(2/5+1/4)
=9/10-2/5-1/4
=9/10-4/10-1/4
=5/10-1/4
=1/2-1/4
=12/4-1/4
=1/4
7/8-5/12+5/6
=7/8-5/12+10/12
=7/8+5/12
=21/24+10/24
=31/24
4/5+3/10-11/20
=4/5+6/20-11/20
=4/5-5/20
=16/20-5/20
=11/20
3/5-(5/8-1/6)
=3/5-(15/24-4/24)
=3/5-11/24
=72/120-55/120
=17/120
3/4-2/7+1/4+2/7
=3/4+1/4-(2/7+2/7)
=1
11/9+3/10-2/9+7/10
=(11/9-2/9)+(3/10+7/10)
=9/9+10/10
=1+1
=2
22/15+7/13+8/15-7/13
=(22/15+8/15)+(7/13-7/13)
=30/15
=2
再问: 还有大题目上那道,谢谢
再答: 7/8+3/4-11/12
=21/24+1/24-22/24
=22/24-22/24
=0
7/8+3/4-11/12简便计算急
用简便方法计算:1-2-3+4+5-6-7+8+9-10-11+12+...+2009-2010-2011+2012 急
12/[(3/4+3/7)*7/11]简便计算
2/13*1/7+11/13/7简便计算(1/3+1/4-1/2)/1/12简便计算
17分之3*28*12分之17简便计算急
简便计算 13分之11÷【8分之5+4分之3÷8分之5】 急
(10分之7加15分之2)乘(4分之3减8分之1)怎么简便计算 急 谢谢
(20减12除以4/3)乘2/1用简便方法计算急
64*111+999*4简便计算!急
简便计算急.练习题的简便计算,
可以简便的用简便计算:5.7÷4分之5+4.3×80% 11÷3%×12%×8分之3
7/29×3/8+6/29×7/12=?(简便计算)?能简便就简便