Sums and differences of mixed numbers
Equivalent Fractions
Common Denominators
Rewriting Fractions
Adding fractions
100

1/3 + 1 5/6 =

13/6 or 

2 1/6

100

Write an equivalent fraction:

1/2

2/4, 3/6, 4/8 ...

100

Find a common denominator for the pair of fractions:

2/5 and 1/6

30, 60, 90 ...

100

Rewrite the fractions with common denominators:

2/3 and 1/6

4/6 and 1/6

100

1/3 + 1/6 =

3/6 or

1/2

200

1 3/10 - 3/5 =

7/10

200

Write an equivalent fraction:

2/3

4/6, 6/9, 8/12 ...

200

Find a common denominator for the pair of fractions:

1/3 and 4/5

15, 30, 45 ...

200

Rewrite the fractions with common denominators:

5/4 and 11/16

20/16 and 11/16

200

1/2 + 2/5 =

9/10

300

1 7/10 + 1 1/2 =

32/10 or

3 2/10 or

3 1/5

300

Write an equivalent fraction:

3/4

6/8, 9/12, 12/16 ...

300

Find a common denominator for the pair of fractions:

3/10 and 9/8

40, 80, 120 ...

300

Rewrite the fractions with common denominators:

6/7 and 1/5

30/35 and 7/35

300

2/3 + 3/4 =

17/12 or

1 5/12

400

2 1/2 - 1 2/8 =

10/8 or 

1 2/8 or 

1 1/4

400

Write an equivalent fraction:

2/5

4/10, 6/15, 8/20 ...

400

Find a common denominator for the pair of fractions:

7/9 and 2/3

9, 18, 27 ...

400

Rewrite the fractions with common denominators:

1/2 and 7/11

11/22 and 14/22

400

1/10 + 4/7 =

47/70

500

3 3/4 + 4 1/6 =

95/12 or

7 11/12

500

Write an equivalent fraction:

4/7

8/14, 12/21, 14/28 ...

500

Find a common denominator for the pair of fractions:

5/6 and 8/21

42, 84, 126 ...

500

Rewrite the fractions with common denominators:

5/12 and 3/5

25/60 and 36/60

500

5/9 + 1/4 =

29/36