Worksheet skill

Adding fractions with the same denominator

Practice adding fractions with the same denominator. Choose the denominators to use, then print a worksheet and answer key.

Create a worksheet See the sample

Sample worksheet

Download the sample worksheet and answer key, or open the builder to change the settings.

Download sample PDF

Sample adding fractions worksheet — Worksheet

Answer key for the sample adding fractions worksheet — Answer key

Change the settings

Before starting: Recognize equal-sized fractional parts and find common factors to simplify an answer.

After this: Compare equivalent fractions before moving to addition with unlike denominators; this page's generator uses like denominators.

Example questions

2/7 + 3/7
5/12 + 4/12
7/10 + 1/10

Settings in the builder

denominator range
proper fractions
simplification

Worked example

5/12 + 4/12

Answer: 3/4

How to solve it

Both fractions count twelfths, so add only the numerators: 9/12. Divide numerator and denominator by 3 to get 3/4. Adding the denominators would change the size of each part.

Common mistakes

What to check

adding denominators
not simplifying the result

Ways to review the work

1
Use a fraction strip to show why like-sized parts keep the same denominator.
2
Show 5 twelfths and 4 twelfths on fraction strips, then match the total to three quarters.

Choose a ready-to-print practice set

Each PDF includes a worksheet and matching answer key. Choose the skill and level that fit the learner; these are individual practice sets, not a complete course.

Start with equal parts