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Adding Fractions with Like Denominators

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Tip: download the PDF for Letter or A4 paper, print it at 100% and use a pencil or crayon. Tap "Show solution" to check your answer, or print it as an answer key.

Up nextSubtracting Fractions with Like Denominators →

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Sixteen sums of two fractions with the same denominator, from thirds to twelfths, such as 2/7 + 3/7. Add the top numbers and keep the bottom number: two sevenths and three sevenths make five sevenths, just as two apples and three apples make five apples. Every answer is less than one whole, and no answer needs simplifying, so the sheet stays on the one idea.

Also try: Subtracting Fractions with Like Denominators · Fraction Wall (Fraction Bars) · Fraction Number Lines 0 to 1

Tips for this fraction worksheet

  • Add the tops, keep the bottom.
  • Say it in words: “two sevenths and three sevenths make five sevenths”.
  • Draw a bar for the first few if it helps.

Page 2 of the PDF is the answer key. The fraction number lines show the same fractions as distances from 0 to 1. When this sheet feels easy, move on to the times tables worksheets, which make simplifying quicker. See all fraction worksheets.

For teachers and parents

What it practises
Equal parts, halves, thirds and quarters, equivalent and comparing fractions, adding, simplifying and mixed numbers
How to use it
Say each fraction in words (“three quarters”). Use folded paper strips or the fraction wall for the first sheets. Answers on page 2.
Time
About 10–20 minutes

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Paste this into your school, class or library web page. It shows the picture and a link back here, so families can print it themselves. You can change the wording.

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Printing tips

  • Fold paper strips into halves, quarters and eighths before the first sheet.
  • Say fractions in words: “three quarters”, “two fifths”.
  • Mark with page 2 and redo the wrong ones the next day.

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