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Add mixed numbers

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Free printable add mixed numbers worksheets for 4th grade. Students add two mixed numbers with like denominators, managing both the whole number and fractional parts of each addend. These worksheets develop the multi-step thinking required for mixed number arithmetic in 4th and 5th grade. Part of our fractions worksheets collection.

What You'll Learn

  • Add two mixed numbers with like denominators
  • Regroup improper fractional sums into whole number parts
  • Simplify mixed number addition results to lowest terms

FAQ

What are the two steps students must perform when adding two mixed numbers?

Students add the fractional parts together and the whole-number parts together separately, then combine the results — regrouping if the fractional sum creates an improper fraction.

When does adding mixed numbers require regrouping, and how is it handled?

Regrouping is needed when the sum of the fractions is improper (numerator ≥ denominator) — students convert the extra fraction to a whole number and add it to the whole-number sum.

How can students check their mixed number addition answers?

Students can convert both mixed numbers to improper fractions, add them, convert back to a mixed number, and compare — this cross-check also reinforces fraction conversion fluency.

Grade
4th Grade
Ages
Ages 9-10
Subject
Math
Format
Printable PDF

Ratings & Reviews

3

Lisa M.

Pre-K Teacher · Verified download

Apr 2026

I love that you're adding this. It fills a real gap in what's available for free online.

Helpful · 5

Sarah K.

Kindergarten Teacher · Verified download

May 2026

So excited for this to be ready! My students really need more practice with this topic.

Helpful · 11

Maria R.

Homeschool parent · Verified download

May 2026

Can't wait! This is exactly what we've been looking for. Please make it soon!

Helpful · 7

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