Chapter 1D: Add & Subtract Fractions Flashcards
1/2 + 1/3
3/6 + 2/3
= 5/6
2/3 + 1/7
14/21 + 3/21
= 17/21
1/4 + 1/6
3/12 + 2/12
= 5/12
1/5 + 2/6
6/30 + 10/30
= 16/30 = 8/15
2/7 + 5/14
4/14 + 5/14
= 9/14
3/6 + 2/4
6/12 + 6/12
= 12/12 = 1
3/10 + 9/30
9/30 + 9/30
= 18/30 = 3/5
1/2 + 4/10
5/10 + 4/10
= 9/10
3/4 + 1/5
15/20 + 4/20
= 19/20
1/9 + 1/11
11/99 + 9/99
= 20/99
1/3 + 5/13
13/39 + 15/39
= 28/39
2/12 + 3/5
10/60 + 36/60
= 46/60 = 23/30
3/7 + 3/8
24/56 + 21/56
= 45/56
11/15 + 3/30
22/30 + 3/30
= 25/30 = 5/6
1/6 + 1/2
1/6 + 3/6
= 4/6 = 2/3
2/5 + 2/11
22/55 + 10/55
= 32/55
8/9 + 1/10
80/90 + 9/90
= 89/90
1/2 + 1/8
1/8 + 4/8
= 5/8
1/5 + 16/20
4/20 + 16/20
= 20/20 = 1
Fractions cannot be added or subtracted unless they have ________.
The Same Denominator
Equivalent fractions are fractions that ____________.
Represent the same amount.
1/2 - 1/3
3/6 - 2/6
= 1/6
1/4 - 1/5
5/20 - 4/20
= 1/20
1/6 - 1/7
7/42 - 6/42
= 1/42
1/8 - 1/9
9/72 - 8/72
= 1/72
3/4 - 1/3
9/12 - 4/12
= 5/12
3/5 - 2/6
18/30 - 10/30
= 8/30 = 4/15
3/7 - 2/8
24/56 - 14/56
= 10/56 = 5/28
5/10 - 1/9
45/90 - 10/90
= 35/90 = 7/18
2/8 - 1/4
2/8 - 2/8
= 0/8 = 0
4/5 - 1/10
8/10 - 1/10
= 7/10
3/4 - 3/6
9/12 - 6/12
= 3/12 = 1/4
4/15 - 1/5
4/15 - 3/15
= 1/15
18/20 - 3/5
18/20 - 12/20
= 6/20 = 3/10
5/9 - 1/3
5/9 - 3/9
= 2/9
4/8 - 30/80
40/80 - 30/80
= 10/80 = 1/8
2/9 - 1/12
8/36 - 3/36
= 5/36
9/10 - 1/2
9/10 - 5/10
= 4/10 = 2/5
2/4 - 3/6
6/12 - 6/12
= 0/12 = 0
3/9 - 1/5
15/45 - 9/45
= 6/45 = 2/15
