Adding Fractions (Like Denominators) Worksheet

When adding fractions with like denominators, simply add the numerators and keep the denominator the same. Simplify answers where possible.

Name: _________________________ Date: _________________________

Part 1: Basic Addition

Instructions: Add the following fractions. Write your answer in the simplest form.

  1. 1/6 + 3/6 = __________
  2. 2/9 + 4/9 = __________
  3. 3/10 + 5/10 = __________
  4. 1/4 + 1/4 = __________
  5. 4/7 + 2/7 = __________
  6. 5/12 + 2/12 = __________
  7. 1/8 + 5/8 = __________
  8. 2/15 + 7/15 = __________

Part 2: Visual Addition

Instructions: Look at the fraction bars described below. Each bar represents a fraction. Add the fractions and write the sum.

  1. 2/5 (two shaded parts out of five) + 1/5 (one shaded part out of five) = __________
  2. 3/8 (three shaded parts out of eight) + 2/8 (two shaded parts out of eight) = __________

Part 3: Word Problems

Instructions: Read each word problem and solve for the sum of the fractions.

  1. Mia ate 1/3 of a cake, and her brother ate 1/3. How much of the cake did they eat together?
    Answer: __________
  2. A gardener planted 2/6 of a row of flowers in the morning and 3/6 in the afternoon. How much of the row was planted in total?
    Answer: __________
  3. Sam read 3/10 of his book on Monday and 4/10 on Tuesday. What fraction of the book has he read?
    Answer: __________
  4. A recipe needs 1/8 cup of sugar and 3/8 cup of flour. What is the total amount of sugar and flour needed?
    Answer: __________

Part 4: Simplify the Sum

Instructions: Add the fractions and simplify the answer if possible.

  1. 3/12 + 5/12 = __________
  2. 2/5 + 2/5 = __________
  3. 4/8 + 2/8 = __________
  4. 6/10 + 3/10 = __________
  5. 1/6 + 1/6 = __________
  6. 5/15 + 5/15 = __________

Part 5: Challenge Problems

Instructions: These problems are a bit trickier. Add the fractions and simplify if needed.

  1. 7/9 + 2/9 = __________
  2. 5/7 + 3/7 = __________
  3. 4/6 + 3/6 = __________
  4. 9/12 + 5/12 = __________
  5. 8/10 + 7/10 = __________
  6. 5/8 + 7/8 = __________