Lesson 6 of 10 · Grades 3 to 5

Practice: Subtract fractions with the same denominator

Subtract the top numbers and keep the bottom number. These ten questions include simple calculations, zero as an answer, and word problems about what is left.

How to use this page

This page gives you ten more questions on the same idea as the lesson "Subtract fractions with the same denominator". Work through them at your own speed. Write your answer down or say it out loud before you open the answer box, so you give yourself a real chance to think.

If a question feels hard, go back to the lesson and look at the worked example again. Getting a question wrong is useful; it shows you the part that needs one more look.

Practice questions

Answer all ten questions in your notebook or in your head. Then open each answer to check your work.

  1. 6/7 - 2/7 = ?

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    4/7.

  2. 8/12 - 5/12 = ?

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    3/12, which simplifies to 1/4.

  3. 11/15 - 4/15 = ?

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    7/15.

  4. 5/6 - 1/6 = ?

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    4/6, which simplifies to 2/3.

  5. 9/9 - 4/9 = ?

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    5/9.

  6. 7/16 - 7/16 = ?

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    0. Seven sixteenths take away seven sixteenths leaves nothing.

  7. A cake has 7/8 left. The family eats 3/8 of the cake. How much is left now?

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    4/8, which simplifies to 1/2 of the cake.

  8. 10/20 - 4/20 = ?

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    6/20, which simplifies to 3/10.

  9. 13/18 - 5/18 = ?

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    8/18, which simplifies to 4/9.

  10. 3/4 - 1/4 = ?

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    2/4, which simplifies to 1/2.