Fractions Review

Common Denominator

100

1/3  and 1/5

15, 30 etc

200

1/4 and 2/5

20, 40 etc

300

1/6 and 1/9

18, 54

400

1/8 and 1/9

72

500

1/5 and 1/10

10

Fill in the missing part

100

1/3 =  __/6

2

200

3/5 = __/20

12

300

2/6 =  4/____

12

400

3/8 = ____/24

9

500

3/8 = 24/___?

64

Adding unlike fractions

100

2/3 + 1/5

13/15

200

5/7 + 1/3

22/21 or 1 and 1/21

300

2 3/5 + 1/3

2 14/15

400

3 4/7 + 5 1/4

8  23/28

500

5 3/6 + 2 1/2

8

subtracting unlike fractions

100

4/5 - 1/3 

7/15

200

6/7 - 1/2

5/14

300

1 1/4 - 2/5

17/20

400

7 - 2 3/5

4 2/5

500

5/6-5/9

15/54 or 5/18

Making numbers improper/proper

100

24/20

1 4/20

200

1 3/4

7/4

300

11/7

1 4/7

400

3 4/5

19/5

500

24/7

3 3/7