Fractions with Like Denominators

Addition

100

3/11 + 6/11 =

9/11

200

2/12 + 8/12 =

10/12

300

1/12 + 2/12 =

3/12

400

1/10 + 2/10 =

3/10

500

1/8 + 1/8 =

2/8

Subtraction

100

10/11 - 5/11 =

5/11

200

5/8 - 2/8 =

3/8

300

5/6 - 1/6 =

4/6

400

8/12 - 7/12 =

1/12

500

3/4 - 2/4 =

1/4

Addition 2

100

4/9 + 4/9 =

8/9

200

2/9 + 5/9 =

7/9

300

3/11 + 4/11 =

7/11

400

1/3 + 1/3 =

2/3

500

1/4 + 1/4 =

2/4

Subtraction 2

100

5/10 - 1/10 =

4/10

200

5/12 - 4/12 =

1/12

300

10/12 - 4/12 =

6/12

400

5/11 - 2/11 =

3/11

500

2/3 - 1/3 =

1/3

Surprise!

100

1/10 + 3/10 =

4/10

200

6/7 - 3/7 =

3/7

300

1/5 + 1/5 =

2/5

400

6/10 - 1/10 =

5/10

500

6/9 - 1/9 =

5/9