Math worksheet designed for 4th graders to practice adding fractions with like denominators.

Let’s solve each problem one by one. Remember: when adding fractions with the same denominator, you just add the numerators and keep the denominator the same.

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1. 7/11 + 2/11 = (7+2)/11 = 9/11

2. 3/7 + 2/7 = (3+2)/7 = 5/7

3. 2/9 + 3/9 = (2+3)/9 = 5/9

4. 2/7 + 6/7 = (2+6)/7 = 8/7 → This is an improper fraction. We can leave it as 8/7 or write as mixed number 1 1/7. But since the worksheet doesn’t specify, we’ll keep it as 8/7.

5. 19/20 + 19/20 = (19+19)/20 = 38/20 → Simplify: divide numerator and denominator by 2 → 19/10

6. 24/25 + 20/25 = (24+20)/25 = 44/25 → Already simplified → 44/25

7. 1/4 + 4/4 = (1+4)/4 = 5/4 → 5/4

8. 5/100 + 9/100 = (5+9)/100 = 14/100 → Simplify: divide by 2 → 7/50

9. 5/8 + 7/8 = (5+7)/8 = 12/8 → Simplify: divide by 4 → 3/2

10. 11/12 + 11/12 = (11+11)/12 = 22/12 → Simplify: divide by 2 → 11/6

11. 2/6 + 5/6 = (2+5)/6 = 7/6 → 7/6

12. 1/2 + 1/2 = (1+1)/2 = 2/2 = 1

13. 2/15 + 3/15 = (2+3)/15 = 5/15 → Simplify: divide by 5 → 1/3

Wait — let me double-check that. The question says “find the sum”, so unless told to simplify, maybe we should leave as 5/15? But usually in math, we simplify. Let’s check the other problems — some are left unsimplified like #4, #5, etc. Actually, looking at #8, they simplified 14/100 to 7/50. So probably we should simplify where possible.

So for #13: 5/15 = 1/3

But wait — let’s be consistent. In #5, 38/20 became 19/10 — simplified. In #8, 14/100 became 7/50 — simplified. In #9, 12/8 became 3/2 — simplified. So yes, we should simplify.

So #13: 5/15 = 1/3

14. 4/14 + 6/14 = (4+6)/14 = 10/14 → Simplify: divide by 2 → 5/7

15. 11/13 + 12/13 = (11+12)/13 = 23/13 → 23/13

16. 3/5 + 5/5 = (3+5)/5 = 8/5 → 8/5

17. 7/11 + 5/11 = (7+5)/11 = 12/11 → 12/11

18. 1/3 + 1/3 = (1+1)/3 = 2/3 → 2/3

19. 2/16 + 13/16 = (2+13)/16 = 15/16 → 15/16

20. 8/10 + 5/10 = (8+5)/10 = 13/10 → 13/10

21. 6/50 + 15/50 = (6+15)/50 = 21/50 → Already simplified → 21/50

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Now let’s list all answers clearly:

1. 9/11
2. 5/7
3. 5/9
4. 8/7
5. 19/10
6. 44/25
7. 5/4
8. 7/50
9. 3/2
10. 11/6
11. 7/6
12. 1
13. 1/3
14. 5/7
15. 23/13
16. 8/5
17. 12/11
18. 2/3
19. 15/16
20. 13/10
21. 21/50

I’ve checked each calculation again. All additions are correct, and simplifications are done where needed.

Final Answer:
1. 9/11
2. 5/7
3. 5/9
4. 8/7
5. 19/10
6. 44/25
7. 5/4
8. 7/50
9. 3/2
10. 11/6
11. 7/6
12. 1
13. 1/3
14. 5/7
15. 23/13
16. 8/5
17. 12/11
18. 2/3
19. 15/16
20. 13/10
21. 21/50