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Fractions of a Set

Grade 3 · On-level practice · 12 questions · Version PG-1LNBDH0-YPJG

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1.What is 3/4 of 20?
2.What is 2/3 of 18?
3.What is 1/2 of 12?
4.What is 2/5 of 20?
5.What is 1/6 of 24?
6.What is 6/10 of 20?
7.What is 1/4 of 20?
8.What is 2/3 of 24?
9.What is 1/2 of 18?
10.What is 2/8 of 16?
11.What is 9/10 of 20?
12.What is 1/2 of 24?

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 13
  1. What is 3/4 of 20?15
  2. What is 2/3 of 18?12
  3. What is 1/2 of 12?6
  4. What is 2/5 of 20?8
  5. What is 1/6 of 24?4
  6. What is 6/10 of 20?12
  7. What is 1/4 of 20?5
  8. What is 2/3 of 24?16
  9. What is 1/2 of 18?9
  10. What is 2/8 of 16?4
  11. What is 9/10 of 20?18
  12. What is 1/2 of 24?12

Worked example

1/3 of 12 is 4 because 12 divided into 3 equal groups gives 4 in each.

Common mistake

Multiplying by the denominator instead of dividing into equal groups.

Helpful hint

Divide by the denominator, then multiply by the numerator.