Math worksheet for practicing addition and subtraction of improper fractions with like denominators, including instructions to simplify answers and provide both improper and mixed fraction forms.

I'll solve all 18 problems step by step, working through each calculation carefully.

Problem 1: 5/3 + 4/3
- Add numerators: 5 + 4 = 9
- Keep denominator: 3
- Result: 9/3 = 3 (improper fraction) = 3 (mixed number)

Problem 2: 15/12 - 5/12
- Subtract numerators: 15 - 5 = 10
- Keep denominator: 12
- Result: 10/12 = 5/6 (simplified improper fraction) = 5/6 (mixed number is just 5/6 since it's less than 1)

Problem 3: 15/11 - 3/11
- Subtract numerators: 15 - 3 = 12
- Keep denominator: 11
- Result: 12/11 (improper fraction) = 1 1/11 (mixed number)

Problem 4: 13/9 + 7/9
- Add numerators: 13 + 7 = 20
- Keep denominator: 9
- Result: 20/9 (improper fraction) = 2 2/9 (mixed number)

Problem 5: 15/8 + 7/8
- Add numerators: 15 + 7 = 22
- Keep denominator: 8
- Result: 22/8 = 11/4 (simplified improper fraction) = 2 3/4 (mixed number)

Problem 6: 17/10 - 9/10
- Subtract numerators: 17 - 9 = 8
- Keep denominator: 10
- Result: 8/10 = 4/5 (simplified improper fraction) = 4/5 (mixed number is just 4/5)

Problem 7: 29/15 - 8/15
- Subtract numerators: 29 - 8 = 21
- Keep denominator: 15
- Result: 21/15 = 7/5 (simplified improper fraction) = 1 2/5 (mixed number)

Problem 8: 17/12 + 13/12
- Add numerators: 17 + 13 = 30
- Keep denominator: 12
- Result: 30/12 = 5/2 (simplified improper fraction) = 2 1/2 (mixed number)

Problem 9: 33/20 - 21/20
- Subtract numerators: 33 - 21 = 12
- Keep denominator: 20
- Result: 12/20 = 3/5 (simplified improper fraction) = 3/5 (mixed number is just 3/5)

Problem 10: 15/13 + 14/13
- Add numerators: 15 + 14 = 29
- Keep denominator: 13
- Result: 29/13 (improper fraction) = 2 3/13 (mixed number)

Problem 11: 26/9 + 34/9
- Add numerators: 26 + 34 = 60
- Keep denominator: 9
- Result: 60/9 = 20/3 (simplified improper fraction) = 6 2/3 (mixed number)

Problem 12: 27/13 - 14/13
- Subtract numerators: 27 - 14 = 13
- Keep denominator: 13
- Result: 13/13 = 1 (improper fraction) = 1 (mixed number)

Problem 13: 17/14 + 19/14
- Add numerators: 17 + 19 = 36
- Keep denominator: 14
- Result: 36/14 = 18/7 (simplified improper fraction) = 2 4/7 (mixed number)

Problem 14: 25/6 - 11/6
- Subtract numerators: 25 - 11 = 14
- Keep denominator: 6
- Result: 14/6 = 7/3 (simplified improper fraction) = 2 1/3 (mixed number)

Problem 15: 29/7 - 13/7
- Subtract numerators: 29 - 13 = 16
- Keep denominator: 7
- Result: 16/7 (improper fraction) = 2 2/7 (mixed number)

Problem 16: 27/4 + 15/4
- Add numerators: 27 + 15 = 42
- Keep denominator: 4
- Result: 42/4 = 21/2 (simplified improper fraction) = 10 1/2 (mixed number)

Problem 17: 21/8 + 17/8
- Add numerators: 21 + 17 = 38
- Keep denominator: 8
- Result: 38/8 = 19/4 (simplified improper fraction) = 4 3/4 (mixed number)

Problem 18: 33/10 - 17/10
- Subtract numerators: 33 - 17 = 16
- Keep denominator: 10
- Result: 16/10 = 8/5 (simplified improper fraction) = 1 3/5 (mixed number)

Final Answer:
1) 9/3 = 3
2) 10/12 = 5/6
3) 12/11 = 1 1/11
4) 20/9 = 2 2/9
5) 22/8 = 11/4 = 2 3/4
6) 8/10 = 4/5
7) 21/15 = 7/5 = 1 2/5
8) 30/12 = 5/2 = 2 1/2
9) 12/20 = 3/5
10) 29/13 = 2 3/13
11) 60/9 = 20/3 = 6 2/3
12) 13/13 = 1
13) 36/14 = 18/7 = 2 4/7
14) 14/6 = 7/3 = 2 1/3
15) 16/7 = 2 2/7
16) 42/4 = 21/2 = 10 1/2
17) 38/8 = 19/4 = 4 3/4
18) 16/10 = 8/5 = 1 3/5