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Grade 5 Fractions of Whole Numbers

Grade 5 · Stretch challenge · 12 questions · Version PG-1DE8N5Q-1865

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1.What is 4/5 of 80?
2.What is 4/5 of 90?
3.What is 4/10 of 100?
4.What is 8/10 of 30?
5.What is 2/4 of 52?
6.What is 1/2 of 46?
7.What is 2/4 of 80?
8.What is 6/8 of 24?
9.What is 1/8 of 88?
10.What is 6/8 of 80?
11.What is 2/6 of 36?
12.What is 2/4 of 72?

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 8
  1. What is 4/5 of 80?64
  2. What is 4/5 of 90?72
  3. What is 4/10 of 100?40
  4. What is 8/10 of 30?24
  5. What is 2/4 of 52?26
  6. What is 1/2 of 46?23
  7. What is 2/4 of 80?40
  8. What is 6/8 of 24?18
  9. What is 1/8 of 88?11
  10. What is 6/8 of 80?60
  11. What is 2/6 of 36?12
  12. What is 2/4 of 72?36

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.