Adding Fractions

Worksheets for practicing addition of fractions.  Includes adding fractions with the same denominator (easy) and addition with unlike denominators (harder).  There are also worksheets for adding mixed numbers.

Click on the the core icon Common Core below specified worksheets to see connections to the Common Core Standards Initiative.

Adding Fractions:
Same Denominator
Add fractions with like denominators using tape diagrams. All problems written horizontally.
3rd and 4th Grades
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Add fractions with sums of 1. For example: 1/7 + 2/7 + 4/7 = 1
3rd and 4th Grades
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Create your own tape diagrams to find the sums of fraction pairs. Fractions have like denominators.
3rd and 4th Grades
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Adding fractions with the same denominators, No simplifying (All answers already in lowest terms), All vertical problems. (example:  4/6 + 1/6 = 5/6)
3rd through 5th Grades
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Worksheet for adding fractions with denominators that are the same; Requires simplifying; Vertical problems. (example:  1/6 + 2/6 = 3/6)
3rd through 5th Grades
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This practice sheet has 12 horizontal problems. Add fractions with like denominators and simplify the answer. (example: 2/7 + 3/7)
3rd and 4th Grades
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Worksheet for adding fractions with the same denominators, Horizontal and vertical problems. (example:  2/6 + 3/6 = 5/6)
3rd through 5th Grades
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This file has 30 task cards that you can cut apart. Use them for classroom scavenger hunts, learning centers, exit slips, or peer help sessions.
3rd through 5th Grades
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This printable has basic, horizontal problems with like denominators. Includes a mix of addition and subtraction problems.
3rd and 4th Grades
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Answers greater than 1, Requires converting from improper fractions to mixed number, All horizontal problems. (example:  5/8 + 4/8 = 1 1/8)
3rd through 5th Grades
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Another worksheet for adding fractions with like denominators, All horizontal problems. (example:  3/8 + 2/8 = 5/8)
3rd through 5th Grades
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On top of the page is an array of shapes with fractions in them. Students should add pairs of fractions in similar shapes. Example: Find the sum of the the fractions in the triangles.
4th through 6th Grades
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Adding Fractions:
Different Denominators
Worksheet for adding fractions with denominators that are different; Only one addend needs to be changed; Vertical problems; Requires simplifying. (example:  1/3 + 1/6 = 1/2)
4th through 6th Grades
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Another worksheet for adding fractions with denominators that are different. (example:  1/4 + 1/2 = 3/4) Vertical problems.
4th through 6th Grades
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This worksheet has twelve horizontal fraction addition problems. All problems have unlike denominators.
4th through 6th Grades
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Add two fractions with unlike denominators using these printable task cards.
4th through 6th Grades
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This page has polygons with fractions in them. Students add similar polygons together. For example: Find the sum of the fractions in the hexagons.
4th through 6th Grades
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Choose a fraction from each circle at the top of the page. Then find the sum.
4th through 6th Grades
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Adding fractions with two unlike denominators, Requires simplifying, Vertical problems, Advanced level
4th through 6th Grades
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This page has a dozen horizontal addition and subtraction problems.
4th through 6th Grades
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Adding Mixed Numbers:
Same Denominators
Add the mixed numbers with like denominators; Vertical problems; Requires simplifying
3rd through 5th Grades
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A dozen mixed number addition problems.  Denominators are the same.
3rd through 5th Grades
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On this page you'll find 12 horizontal mixed number addition problems. All addends have like denominators.
3rd through 5th Grades
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Find sums and differences for the pairs of numbers. All problems written horizontally.
3rd through 5th Grades
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Adding Mixed Numbers:
Different Denominators
Adding mixed numbers with different denominators. There are no improper fractions in the addends or the answers.
4th through 6th Grades
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Add pairs of mixed numbers with unlike denominators. This page has 12 problems, and there is space for students to show their work.
4th through 6th Grades
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A set of 30 task cards for adding mixed numbers with unlike denominators.
4th through 6th Grades
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At the top of the page, students are given a set of mixed numbers with basic shapes around them. Students add numbers with similar shapes. For example: Add the numbers in the trapezoids.
4th through 6th Grades
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Here are some horizontal problems for adding and subtracting mixed numbers with unlike denominators. All problems are horizontal.
4th through 6th Grades
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These addition problems have mixed numbers with improper fractions in the sums. A few also have improper fractions as addends.
4th through 6th Grades
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See also:
Subtracting Fractions

This page has worksheets on subtracting fractions and mixed numbers. Includes like and unlike denominators.

Fraction Worksheets

Worksheets for teaching basic fractions, equivalent fractions, simplifying fractions, comparing fractions, and ordering fractions. There are also worksheets on addition, subtraction, multiplication, and division of fractions.

Worksheet Images

Tape Diagram Fraction Addition


Adding Fractions - Same Denominators


Adding Fractions Worksheet