Printable primary math worksheet for math grades 1 to 6 based on ... - Free Printable

Let’s simplify each fraction step by step. To reduce a fraction, we divide both the top (numerator) and bottom (denominator) by their greatest common factor (GCF). We’ll go one by one.

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First row:

1. 27/81
Both divisible by 27 → 27 ÷ 27 = 1, 81 ÷ 27 = 3 → 1/3

2. 49/98
Both divisible by 49 → 49 ÷ 49 = 1, 98 ÷ 49 = 2 → 1/2

3. 72/96
GCF is 24 → 72 ÷ 24 = 3, 96 ÷ 24 = 4 → 3/4

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Second row:

4. 5/60
Divisible by 5 → 5 ÷ 5 = 1, 60 ÷ 5 = 12 → 1/12

5. 12/40
GCF is 4 → 12 ÷ 4 = 3, 40 ÷ 4 = 10 → 3/10

6. 55/75
GCF is 5 → 55 ÷ 5 = 11, 75 ÷ 5 = 15 → 11/15

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Third row:

7. 13/78
13 divides into 78 six times → 13 ÷ 13 = 1, 78 ÷ 13 = 6 → 1/6

8. 35/45
GCF is 5 → 35 ÷ 5 = 7, 45 ÷ 5 = 9 → 7/9

9. 3/30
Divisible by 3 → 3 ÷ 3 = 1, 30 ÷ 3 = 10 → 1/10

10. 3/45
Divisible by 3 → 3 ÷ 3 = 1, 45 ÷ 3 = 15 → 1/15

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Fourth row:

11. 21/56
GCF is 7 → 21 ÷ 7 = 3, 56 ÷ 7 = 8 → 3/8

12. 16/80
GCF is 16 → 16 ÷ 16 = 1, 80 ÷ 16 = 5 → 1/5

13. 6/84
GCF is 6 → 6 ÷ 6 = 1, 84 ÷ 6 = 14 → 1/14

14. 36/80
GCF is 4 → 36 ÷ 4 = 9, 80 ÷ 4 = 20 → 9/20

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Fifth row:

15. 3/66
Divisible by 3 → 3 ÷ 3 = 1, 66 ÷ 3 = 22 → 1/22

16. 27/42
GCF is 3 → 27 ÷ 3 = 9, 42 ÷ 3 = 14 → 9/14

17. 12/90
GCF is 6 → 12 ÷ 6 = 2, 90 ÷ 6 = 15 → 2/15

18. 8/21
No common factors other than 1 → already simplified → 8/21

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Sixth row:

19. 20/75
GCF is 5 → 20 ÷ 5 = 4, 75 ÷ 5 = 15 → 4/15

20. 28/76
GCF is 4 → 28 ÷ 4 = 7, 76 ÷ 4 = 19 → 7/19

21. 12/44
GCF is 4 → 12 ÷ 4 = 3, 44 ÷ 4 = 11 → 3/11

22. 16/72
GCF is 8 → 16 ÷ 8 = 2, 72 ÷ 8 = 9 → 2/9

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Seventh row:

23. 51/68
GCF is 17 → 51 ÷ 17 = 3, 68 ÷ 17 = 4 → 3/4

24. 66/99
GCF is 33 → 66 ÷ 33 = 2, 99 ÷ 33 = 3 → 2/3

25. 42/70
GCF is 14 → 42 ÷ 14 = 3, 70 ÷ 14 = 5 → 3/5

26. 15/90
GCF is 15 → 15 ÷ 15 = 1, 90 ÷ 15 = 6 → 1/6

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Eighth row:

27. 12/51
GCF is 3 → 12 ÷ 3 = 4, 51 ÷ 3 = 17 → 4/17

28. 12/96
GCF is 12 → 12 ÷ 12 = 1, 96 ÷ 12 = 8 → 1/8

29. 20/70
GCF is 10 → 20 ÷ 10 = 2, 70 ÷ 10 = 7 → 2/7

30. 14/91
GCF is 7 → 14 ÷ 7 = 2, 91 ÷ 7 = 13 → 2/13

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Final Answer:
1/3, 1/2, 3/4,
1/12, 3/10, 11/15,
1/6, 7/9, 1/10, 1/15,
3/8, 1/5, 1/14, 9/20,
1/22, 9/14, 2/15, 8/21,
4/15, 7/19, 3/11, 2/9,
3/4, 2/3, 3/5, 1/6,
4/17, 1/8, 2/7, 2/13