Adding 3 Like Fractions worksheet with math problems and a yellow truck graphic.

Let's solve each of these adding three like fractions problems step by step. Since all the fractions in each problem have the same denominator, we can simply add the numerators and keep the denominator the same. Then, we'll simplify the result to its lowest terms if needed.

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1. $ \frac{1}{6} + \frac{2}{6} + \frac{1}{6} $

Add numerators: $1 + 2 + 1 = 4$
So: $ \frac{4}{6} $

Simplify: $ \frac{4}{6} = \frac{2}{3} $

✔ Answer: $ \frac{2}{3} $

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2. $ \frac{3}{12} + \frac{2}{12} + \frac{3}{12} $

Add numerators: $3 + 2 + 3 = 8$
So: $ \frac{8}{12} $

Simplify: $ \frac{8}{12} = \frac{2}{3} $

✔ Answer: $ \frac{2}{3} $

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3. $ \frac{2}{9} + \frac{2}{9} + \frac{2}{9} $

Add numerators: $2 + 2 + 2 = 6$
So: $ \frac{6}{9} $

Simplify: $ \frac{6}{9} = \frac{2}{3} $

✔ Answer: $ \frac{2}{3} $

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4. $ \frac{1}{15} + \frac{1}{15} + \frac{1}{15} $

Add numerators: $1 + 1 + 1 = 3$
So: $ \frac{3}{15} $

Simplify: $ \frac{3}{15} = \frac{1}{5} $

✔ Answer: $ \frac{1}{5} $

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5. $ \frac{1}{8} + \frac{2}{8} + \frac{1}{8} $

Add numerators: $1 + 2 + 1 = 4$
So: $ \frac{4}{8} $

Simplify: $ \frac{4}{8} = \frac{1}{2} $

✔ Answer: $ \frac{1}{2} $

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6. $ \frac{1}{6} + \frac{1}{6} + \frac{1}{6} $

Add numerators: $1 + 1 + 1 = 3$
So: $ \frac{3}{6} $

Simplify: $ \frac{3}{6} = \frac{1}{2} $

✔ Answer: $ \frac{1}{2} $

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7. $ \frac{4}{20} + \frac{6}{20} + \frac{5}{20} $

Add numerators: $4 + 6 + 5 = 15$
So: $ \frac{15}{20} $

Simplify: $ \frac{15}{20} = \frac{3}{4} $

✔ Answer: $ \frac{3}{4} $

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8. $ \frac{4}{10} + \frac{2}{10} + \frac{2}{10} $

Add numerators: $4 + 2 + 2 = 8$
So: $ \frac{8}{10} $

Simplify: $ \frac{8}{10} = \frac{4}{5} $

✔ Answer: $ \frac{4}{5} $

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9. $ \frac{3}{25} + \frac{3}{25} + \frac{4}{25} $

Add numerators: $3 + 3 + 4 = 10$
So: $ \frac{10}{25} $

Simplify: $ \frac{10}{25} = \frac{2}{5} $

✔ Answer: $ \frac{2}{5} $

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10. $ \frac{2}{8} + \frac{2}{8} + \frac{2}{8} $

Add numerators: $2 + 2 + 2 = 6$
So: $ \frac{6}{8} $

Simplify: $ \frac{6}{8} = \frac{3}{4} $

✔ Answer: $ \frac{3}{4} $

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11. $ \frac{1}{6} + \frac{1}{6} + \frac{1}{6} $

Same as #6: $ \frac{3}{6} = \frac{1}{2} $

✔ Answer: $ \frac{1}{2} $

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12. $ \frac{3}{9} + \frac{2}{9} + \frac{1}{9} $

Add numerators: $3 + 2 + 1 = 6$
So: $ \frac{6}{9} $

Simplify: $ \frac{6}{9} = \frac{2}{3} $

✔ Answer: $ \frac{2}{3} $

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13. $ \frac{3}{18} + \frac{3}{18} + \frac{3}{18} $

Add numerators: $3 + 3 + 3 = 9$
So: $ \frac{9}{18} $

Simplify: $ \frac{9}{18} = \frac{1}{2} $

✔ Answer: $ \frac{1}{2} $

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14. $ \frac{5}{30} + \frac{5}{30} + \frac{5}{30} $

Add numerators: $5 + 5 + 5 = 15$
So: $ \frac{15}{30} $

Simplify: $ \frac{15}{30} = \frac{1}{2} $

✔ Answer: $ \frac{1}{2} $

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15. $ \frac{3}{8} + \frac{2}{8} + \frac{1}{8} $

Add numerators: $3 + 2 + 1 = 6$
So: $ \frac{6}{8} $

Simplify: $ \frac{6}{8} = \frac{3}{4} $

✔ Answer: $ \frac{3}{4} $

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✔ Final Answers (in order):

1. $ \frac{2}{3} $
2. $ \frac{2}{3} $
3. $ \frac{2}{3} $
4. $ \frac{1}{5} $
5. $ \frac{1}{2} $
6. $ \frac{1}{2} $
7. $ \frac{3}{4} $
8. $ \frac{4}{5} $
9. $ \frac{2}{5} $
10. $ \frac{3}{4} $
11. $ \frac{1}{2} $
12. $ \frac{2}{3} $
13. $ \frac{1}{2} $
14. $ \frac{1}{2} $
15. $ \frac{3}{4} $

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🔍 Summary Tips:

- When adding like fractions (same denominator), just add the numerators.
- Keep the denominator the same.
- Always simplify the answer to lowest terms using GCF (Greatest Common Factor).

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