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Grade 5 Fractions of Whole Numbers

Grade 5 · Stretch challenge · 12 questions · Version PG-DUF6DS-1865

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1.What is 1/3 of 36?
2.What is 7/8 of 88?
3.What is 1/3 of 57?
4.What is 2/3 of 54?
5.What is 3/10 of 40?
6.What is 4/8 of 72?
7.What is 3/10 of 110?
8.What is 1/3 of 48?
9.What is 2/10 of 120?
10.What is 2/5 of 45?
11.What is 9/10 of 30?
12.What is 5/6 of 12?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 20
  1. What is 1/3 of 36?12
  2. What is 7/8 of 88?77
  3. What is 1/3 of 57?19
  4. What is 2/3 of 54?36
  5. What is 3/10 of 40?12
  6. What is 4/8 of 72?36
  7. What is 3/10 of 110?33
  8. What is 1/3 of 48?16
  9. What is 2/10 of 120?24
  10. What is 2/5 of 45?18
  11. What is 9/10 of 30?27
  12. What is 5/6 of 12?10

Worked example

5/6 of 42 = 35. Divide 42 by 6, then multiply 7 by 5.

Common mistake

Multiplying before dividing and creating unnecessary large numbers.

Helpful hint

Divide by the denominator first when it divides evenly.