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Add Mixed Numbers Worksheet

This Add Mixed Numbers Worksheet gives 5th graders eight problems adding mixed numbers with unlike denominators and simplifying each sum. A complete answer key is included — perfect for no-prep fraction practice at home or school.

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About this resource

Description

Adding mixed numbers is a key fifth-grade fraction skill that brings together everything students know about equivalent fractions, common denominators, and regrouping. This Add Mixed Numbers Worksheet gives learners focused practice combining a whole-number part and a fraction part, then simplifying the result. When the fractions have unlike denominators, students first rename them with a common denominator before they add, which strengthens number sense and prepares them for more advanced work with rational numbers.

This printable worksheet offers clear, well-spaced adding mixed numbers practice that is easy to assign and easy to check. Each of the eight problems presents two mixed numbers to add, such as 1 ¾ + 2 ⅜. Students find a common denominator, add the fractions and the whole numbers, regroup when the fraction is greater than one, and write the final sum as a mixed number in simplest form. The included answer key shows every simplified answer so grading takes seconds.

What’s Included

  • 1 print-ready PDF worksheet
  • Answer key
  • 8 adding-mixed-numbers problems with unlike denominators

There are three reasons this resource helps students master the skill. First, the Add Mixed Numbers Worksheet keeps the layout clean and uncluttered, so learners can focus on the math instead of hunting for the next problem. Second, the mix of denominators pushes students to find common denominators and practice regrouping, not just repeat one pattern. Third, writing every answer in simplest form reinforces equivalent fractions and builds the habit of finishing a problem completely.

Teachers and parents can extend the practice in fun ways. Turn the worksheet into a partner challenge where students solve, then swap papers to check with the answer key. Connect the skill to real life by adding measurements from a recipe or lengths from a building project. For students who need a warm-up, review converting improper fractions to mixed numbers first, or use fraction tiles to model a few sums before moving to paper.

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