Adding and Subtracting Unlike Fractions

Name: _____________________________
Date: _____________________________

Instructions: Find the common denominator, then add or subtract. Simplify your answers where possible.

Part A: Adding Fractions

1. 1/3 + 1/4 = __________

2. 2/5 + 1/3 = __________

3. 3/4 + 2/3 = __________

4. 5/6 + 1/2 = __________

5. 3/8 + 1/6 = __________

6. 2/3 + 3/5 = __________

Part B: Subtracting Fractions

7. 3/4 − 1/3 = __________

8. 5/6 − 1/2 = __________

9. 7/8 − 1/4 = __________

10. 4/5 − 2/3 = __________

11. 5/6 − 3/8 = __________

12. 2/3 − 3/7 = __________

Part C: Mixed Operations

13. 1/2 + 1/6 + 1/3 = __________

14. 7/10 − 1/5 + 1/2 = __________

15. 5/8 + 1/4 − 1/2 = __________

16. 3/4 − 1/6 + 1/3 = __________

Part D: Word Problems

17. Sarah walked 2/3 of a kilometre to school and 3/4 of a kilometre to the library. How far did she walk in total?

Answer: __________

18. A recipe calls for 5/6 cup of flour. Tom has already added 1/3 cup. How much more flour does he need to add?

Answer: __________