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Grade 5 · Math · Fractions

5th Grade Add Fractions With Unlike Denominators worksheets

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Add Fractions With Unlike Denominators

Grade 5 Math Worksheet

NameDate

Find the sum. Write it in simplest form.

  1. + =

  2. + =

  3. + =

  4. + =

  5. + =

  6. + =

  7. + =

  8. + =

  9. + =

  10. + =

  11. + =

  12. + =

  13. + =

  14. + =

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5th Grade Add Fractions With Unlike Denominators worksheet 1 – printable PDF
Download PDF: 123456

About this worksheet

Fractions can only be added when their pieces are the same size, so fractions with different denominators are renamed with a common denominator first. For 1/4 + 1/6 that is twelfths: 3/12 + 2/12 = 5/12. This fifth grade sheet has fourteen sums of fractions with unlike denominators; each answer is written in simplest form, as a mixed number when it is more than 1.

Each version has different fractions, and the answer key gives every sum.

What your child will learn

  • Find a common denominator
  • Rename each fraction
  • Add the numerators
  • Write the sum in simplest form

Common Core standard: 5.NF.A.1

Worked example

1/3 + 1/4 becomes 4/12 + 3/12, so the sum is 7/12.

Common mistake

Adding the numerators and the denominators, so 1/3 + 1/4 becomes 2/7.

Helpful hint

Rename both fractions with the same denominator before adding.

Next skill: Multiply FractionsEarlier: Subtract Fractions With Regrouping

Questions parents ask

What is the most common mistake with add fractions with unlike denominators?

Adding the numerators and the denominators, so 1/3 + 1/4 becomes 2/7.

How can I help my child with add fractions with unlike denominators?

Rename both fractions with the same denominator before adding.

Are these 5th grade math worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

Similar: Equivalent Fractions · Mixed Numbers to Improper Fractions

More 5th grade fractions

See all fractions

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