Equivalent Fractions with Common Denominatrors
Add and Subtract Fractions
Patterns with Fractions
Subtract Mixed Numbers
Add and Subtract Mixed Numbers
100

2/3 and 5/9

6/9 and 5/9

100

1/4 + 3/8 

5/8

100

1/4, 1/2, 3/4, ___ 

Rule: add 1/4

4/4 or 1

100

3 2/3 - 1 11/12

1 9/12 or 1 3/4

100

1 4/5 + 2 1/10

3 9/10

200

1/3 and 1/5 

3/15 and 5/15

200

5/12 + 1/3

9/12 or 3/4

200

3/10, 2/5, ___, 3/5, 7/10 

Rule: add 1/10

5/10 or 1/2

200

4 1/4 - 2 1/3

1 11/12

200

4 5/6 - 2 3/4 

2 2/24 or 2 1/12

300

5/9 and 4/15

12/45 and 25/45

300

2/5 + 3/7

29/35

300

10 2/3, 9 11/18, 8 5/9, ____, 6 4/9

Rule: subtract 1 1/18

7 9/18 or 7 1/2

300

5 2/5 - 1 1/2

3 9/10

300

7 2/3 - 3 1/6

4 3/6 or 4 1/2

400

1/6 and 4/21

7/42 and 8/42

400

3/4 - 1/8 

5/8

400

1 3/8, 1 3/4, 2 1/8, ____, 2 7/8

Rule: add 3/8

2 4/8 or 2 1/2

400

13 1/6 - 3 4/5

9 11/30

400

3 2/3 - 1 1/6

2 3/6 or 2 1/2 

500

7/12 and 5/18

10/36 and 21/36

500

1/4 - 1/7 

3/28

500

2 5/12, 2 1/6, 1 11/12, ____, 1 5/12

Rule: subtract 1/4

1 8/12 or 1 2/3 

SUBTRACT 1/4

500

7 3/8 - 2 7/9 

4 43/72

500

3 5/8 + 5/12

4 1/24