Printable Adding Fractions Worksheets

Adding fractions worksheets teach 4th and 5th grade students to add fractions with like and unlike denominators. These printable pages feature fraction strip models, LCM guides, and answer keys.

Adding Fractions Practice Pack. Ready to Print.

Structured, printable skill sheets with step-by-step guidance for Adding Fractions.

Build My PacketIncluded with Practice Buds Membership

Targeted Practice by Skill

About Adding Fractions

What this skill is

Adding fractions combines parts of the same unit whole. Like denominators require adding numerators only, while unlike denominators require finding a common denominator before adding.

When children learn it

Adding fractions with like denominators is taught in 4th grade (CCSS 4.NF.B.3). Adding fractions with unlike denominators using equivalent fractions is a 5th grade benchmark (CCSS 5.NF.A.1).

Teaching Tips

  • Use pizza language: if you have 1 slice of a 4-slice pizza and get 2 more slices, you have 3 slices of the 4-slice pizza (3/4), not 3/8! The denominator is the name of the slice and never changes during addition.

Common Mistakes

  • Adding both the numerators AND the denominators together (writing 1/4 + 1/4 = 2/8 instead of 2/4).
  • Adding unlike fractions without converting to a common denominator first.
  • Forgetting to simplify the final sum or convert improper fractions to mixed numbers.

More Fractions Concepts

Equal PartsIntroduction to FractionsNumerator and DenominatorFraction of a NumberFractions on a Number LineComparing FractionsCompleting Whole NumbersEquivalent FractionsFraction Word ProblemsOrdering FractionsSubtracting FractionsFractions and DecimalsMixed Numbers and Improper FractionsMultiplying FractionsSimplifying FractionsDividing FractionsMixed Operations with Fractions

Related Articles

  • Adding and Subtracting Fractions with Unlike Denominators

    To add or subtract fractions with different denominators, first rewrite both fractions so they share the same denominator. Then add or subtract the tops and keep the bottom the same. Short sessions with printable adding fractions worksheets give your child the repetition that makes the routine automatic.

    Read more
View all Fractions Worksheets