Subtracting Fractions!!!!!HELP!!!!!DUE TODAY!!!!!!!!!!?

2008-10-08 10:38 am
Subtract. Write your answers in simplest form:

1 minus 3/8
7/11 minus 3/11
3(whole) and 4/5 minus 2(whole) and 1/5
11(whole) and 3/4 minus 3(whole) and 1/5
6(whole) and 1/2 minus 5

回答 (6)

2008-10-16 2:35 am
✔ 最佳答案
1 minus 3/8
(1*8 - 3)/8
5/8


7/11 minus 3/11
(7-3)/11
4/11


.

2008-10-08 11:18 am
1)
1 - 3/8
= 8/8 - 3/8
= 5/8

2)
7/11 - 3/11
= (7 - 3)/11
= 4/11

3)
3 4/5 - 2 1/5
= (3 - 2) + (4/5 - 1/5)
= 1 + 3/5
= 1 3/5

4)
11 3/4 - 3 1/5
= 11 (3 x 5)/(4 x 5) - 3 (1 x 4)/(5 x 4) (<== get the same denominator)
= 11 15/20 - 3 4/20
= (11 - 3) + (15/20 - 4/20)
= 8 + 11/20
= 8 11/20

5)
6 1/2 - 5
= (6 - 5) + 1/2
= 1 + 1/2
= 1 1/2
2008-10-08 10:48 am
Q1
1 - 3/8 = (8-3)/8 = 5/8

Q2
7/11 - 3/11 = (7-3)/11 = 4/11

Q3
3 4/5 - 2 1/5
= (15+4)/5 - (10+1)/5
= (19-11)/5 = 8/ 5

Q4
11 3/4 - 3 1/5
= (44+3)/4 - (15+1)/5
= 47/4 - 16/5
= [(47*5) - (16*4) ] /20
= (235-64)/20
= 171/20

Q5
6 1/2 - 5
= (12+1)/2 - 5
= 13/2 - 5
= (13-10)/2 = 3/2
2008-10-08 10:46 am
1 minus 3/8 = 5/8

7/11 minus 3/11 = 4/11

3(whole) and 4/5 minus 2(whole) and 1/5 = 1 and 3/5

11(whole) and 3/4 minus 3(whole) and 1/5 = 8 and 11/20

6(whole) and 1/2 minus 5 = 1 and 1/2
2008-10-08 10:44 am
8/8 - 3/8 = 5/8

7/11 - 3/11 = 4/11

3 - 2 + 4/5 - 1/5
1 3/5

11 - 3 + 3/4 - 1/5
8 + 15/20 - 4/20
8 11/20

6 - 5 + 1/2
1 ½
2015-12-11 12:38 am
Are you ADD or ADHD or just don't want to read the book? Even people who are not super smart and struggle with fractions know how to subtract and add fractions with like denominators..


收錄日期: 2021-05-01 11:18:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081008023845AABMpIf

檢視 Wayback Machine 備份