Fractions: Unlike Denominators

Cards · 20

1/2 + 1/3

Common denominator is 6. Convert: 3/6 + 2/6. Add numerators: 5/6.

1/2 - 1/3

Common denominator is 6. Convert: 3/6 - 2/6. Subtract numerators: 1/6.

1/3 + 1/4

Common denominator is 12. Convert: 4/12 + 3/12. Add numerators: 7/12.

2/3 - 1/2

Common denominator is 6. Convert: 4/6 - 3/6. Subtract numerators: 1/6.

1/4 + 2/5

Common denominator is 20. Convert: 5/20 + 8/20. Add numerators: 13/20.

3/4 - 1/3

Common denominator is 12. Convert: 9/12 - 4/12. Subtract numerators: 5/12.

1/2 + 3/8

Common denominator is 8. Convert: 4/8 + 3/8. Add numerators: 7/8.

5/6 - 1/2

Common denominator is 6. Convert: 5/6 - 3/6 = 2/6. Simplify by dividing by 2: 1/3.

2/5 + 1/2

Common denominator is 10. Convert: 4/10 + 5/10. Add numerators: 9/10.

3/5 - 1/4

Common denominator is 20. Convert: 12/20 - 5/20. Subtract numerators: 7/20.

1/6 + 2/3

Common denominator is 6. Convert: 1/6 + 4/6. Add numerators: 5/6.

7/10 - 2/5

Common denominator is 10. Convert: 7/10 - 4/10 = 3/10.

3/8 + 1/4

Common denominator is 8. Convert: 3/8 + 2/8. Add numerators: 5/8.

5/8 - 1/2

Common denominator is 8. Convert: 5/8 - 4/8. Subtract numerators: 1/8.

1/6 + 1/4

Common denominator is 12. Convert: 2/12 + 3/12. Add numerators: 5/12.

5/6 - 3/4

Common denominator is 12. Convert: 10/12 - 9/12. Subtract numerators: 1/12.

2/7 + 1/3

Common denominator is 21. Convert: 6/21 + 7/21. Add numerators: 13/21.

4/5 - 2/3

Common denominator is 15. Convert: 12/15 - 10/15. Subtract numerators: 2/15.

1/10 + 3/4

Common denominator is 20. Convert: 2/20 + 15/20. Add numerators: 17/20.

7/9 - 1/3

Common denominator is 9. Convert: 7/9 - 3/9. Subtract numerators: 4/9.