Let’s solve each fraction simplification problem step by step.
We simplify a fraction by dividing both the numerator (top) and denominator (bottom) by their
greatest common factor — the biggest number that divides evenly into both.
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1. 2/4 → divide top and bottom by 2 → 1/2
2. 8/12 → divide by 4 → 2/3
3. 20/50 → divide by 10 → 2/5
4. 12/20 → divide by 4 → 3/5
5. 10/15 → divide by 5 → 2/3
6. 2/8 → divide by 2 → 1/4
7. 5/16 → no common factors besides 1 → stays 5/16
8. 4/12 → divide by 4 → 1/3
9. 5/50 → divide by 5 → 1/10
10. 20/32 → divide by 4 → 5/8
11. 9/18 → divide by 9 → 1/2
12. 4/16 → divide by 4 → 1/4
13. 20/25 → divide by 5 → 4/5
14. 3/8 → no common factors → stays 3/8
15. 8/16 → divide by 8 → 1/2
16. 6/15 → divide by 3 → 2/5
17. 35/40 → divide by 5 → 7/8
18. 3/9 → divide by 3 → 1/3
19. 40/50 → divide by 10 → 4/5
20. 5/30 → divide by 5 → 1/6
21. 4/8 → divide by 4 → 1/2
All answers checked for accuracy.
Final Answer:
1. 1/2
2. 2/3
3. 2/5
4. 3/5
5. 2/3
6. 1/4
7. 5/16
8. 1/3
9. 1/10
10. 5/8
11. 1/2
12. 1/4
13. 4/5
14. 3/8
15. 1/2
16. 2/5
17. 7/8
18. 1/3
19. 4/5
20. 1/6
21. 1/2
Parent Tip: Review the logic above to help your child master the concept of 3rd grade fractions worksheets.
