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100

2/9 +3/9 =

5/9

100

3/4 - 2/4 =

1/4

100

Write 5/12 as a sum of unit fractions.

1/12 + 1/12 + 1/12 + 1/12 + 1/12

100

1/2 + 1/2 =

2/2= 1

100

8/12 - 6/12 =

2/12 = 1/6

200

1/4 + 2/4 =

3/4

200

5/8 - 4/8 =

1/8

200

Write 4/100 as a sum of unit fractions.

1/100 + 1/100 + 1/100 + 1/100

200

5/9 + 1/9 =

6/9 = 2/3

200

6/8 - 2/8 =

4/8 = 1/2

300

4/6 + 1/6 =

5/6

300

6/11 - 1/11 =

5/11

300

Write 3/7 as a sum of fractions two different ways.

1/7 + 1/7 + 1/7

2/7 + 1/7

300

1/8 + 3/8 =

4/8 = 1/2

300

9/9 - 3/9 =

6/9 = 2/3

400

6/10 + 3/10 =

9/10

400

9/12 - 2/12 =

7/12

400

Write 6/9 as a sum of fractions three different ways.

1/9 + 1/9 + 1/9 + 1/9 + 1/9 + 1/9

4/9 + 2/9

3/9 + 3/9

etc.

400

3/20 + 11/20 =

14/20 = 7/10

400

3/14 - 1/14 =

2/14 = 1/7

500

2/16 + 13/16 =

15/16

500

13/20 - 6/20 =

7/20

500

Write 9/12 as a sum of fractions four different ways.

1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12 + 1/12

5/12 + 4/12

6/12 + 3/12

1/12 + 8/12

etc.

500

10/36 + 17/36 =

27/36 = 3/4

500

9/12 - 5/12 =

4/12 = 1/3