Show:
Common Denominator
Least Common Denominator
Mixed Numbers
Improper Fractions
Estimating
100

9/10 - 2/10

7/10

100

1/2 + 1/4

3/4

100

1 and 3/13 + 3 and 4/13

4 and 7/13

100

3/4 +3/8

1 and 1/8

100

5/6 +9/11

about 2

200

2/15 + 7/15

3/5

200

7/10 - 3/5

1/10

200

5 and 4/5 - 3 and 2/5

2 and 2/5

200

6/7 +13/14

1 and 11/14

200

6 and 3/4 - 2 and 2/5

about 5

300

7/25 + 13/25

4/5

300

4/9 + 1/6 

11/18

300

7 and 8/17 + 5 and 6/34

12 and 11/17

300

5 and 5/6 + 2 and 3/10

8 and 2/15

300

43 x 1/9

about 5

400

24/30 - 22/30

1/15

400

11/15 - 5/12

19/60

400

14 and 2/9 - 9 and 4/12

4 and 8/9

400

12 and 4/7 + 11 and 2/3 

24 and 5/21

400

46 and 7/9 divide by 7 and 6/7

about 6 or about 7

500

4/48 + 17/48 + 9/48

5/8

500

3/8 + 4/14 + 2/7

53/56

500

5 and 3/7 + 8 and 1/14 + 1 and 9/21

14 and 13/14

500

4 and 3/5 + 7 and 13/20 + 8 and 32/40

21 and 1/20

500

7 and 11/15 + 8 and 9/13 - 5 and 6/17

about 12