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Grade 4–6Common Core (CCSS) · Math: number sense

Math · Grade 4

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Fraction of an amount · Grade 4

Name: ____________________

Worked example

  1. The goal: work out how much a part of a whole is, for example what 2/3 of 90 is.
  2. Example: 2/3 of 90. First divide the whole into the denominator's parts: 90 ÷ 3 = 30.
  3. So one third is 30.
  4. Then take as many parts as the numerator says: 2 × 30 = 60. Answer: 60.
  5. Check: read the question again. Does your answer give what was asked, with the right unit? Work backwards to see that it fits. ✓
Example: how to solve it
1.

Calculate: 24 of 8 =

2.

Elias has 32 kr and spends 2/4 of it. How much is spent? Answer with the correct unit.

3.

Calculate: 24 of 36 =

4.

A bag contains 24 marbles. 1/2 of them are blue. How many marbles are blue? Answer with the correct unit.

5.

Calculate: 25 of 15 =

6.

A movie lasts 25 minutes. 3/5 has been shown. How many minutes have been shown? Answer with the correct unit.

7.

Calculate: 45 of 50 =

8.

A warehouse has 24 bottles. 1/2 are sent to a store. How many bottles are sent? Answer with the correct unit.

9.

Calculate: 23 of 21 =

10.

A class has 24 pupils. 1/2 of them walk to school. How many pupils walk? Answer with the correct unit.

11.

Calculate: 26 of 48 =

12.

A trail is 24 km long. 1/2 goes through woods. How many km go through woods? Answer with the correct unit.

13.

Calculate: 26 of 30 =

14.

A farm has 40 m² of land. 2/4 is used for crops. How many m² are used for crops? Answer with the correct unit.

15.

Calculate: 36 of 54 =

16.

A trip is 24 km. 1/2 of it is done by train. How many km is that? Answer with the correct unit.

17.

Calculate: 13 of 6 =

18.

A library has 24 books. 1/3 are nonfiction books. How many nonfiction books are there? Answer with the correct unit.

19.

Calculate: 12 of 10 =

20.

A book has 24 pages. Vera has read 2/3 of the book. How many pages has Vera read? Answer with the correct unit.

Answer key

  1. 1. 4
  2. 2. 16 kr
  3. 3. 18
  4. 4. 12 marbles
  5. 5. 6
  6. 6. 15 min
  7. 7. 40
  8. 8. 12 bottles
  9. 9. 14
  10. 10. 12 pupils
  11. 11. 16
  12. 12. 12 km
  13. 13. 10
  14. 14. 20 m²
  15. 15. 27
  16. 16. 12 km
  17. 17. 2
  18. 18. 8 books
  19. 19. 5
  20. 20. 16 pages

Created with WorksheetMint

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Area
Fractions
Exercise type
Fraction of an amount
Grade
4 (ages 9–10)
Difficulty
Easy
Number of tasks
20
Task format
Mixed
Paper size
US Letter
1. Choose content
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Fraction practice for fourth graders: find a fraction of a number, like 2/3 of 12.

How to use the tool

  1. Pick a difficulty: easy, medium or hard.
  2. Choose how many problems you want (10, 20 or 30).
  3. Print or save as PDF. “Create new version” gives brand-new problems with the same settings.

About this generator

In fourth grade students connect fractions with multiplication and division by finding a fraction of a set. Numbers are chosen so every answer is a whole number. Every sheet has a separate answer key calculated by the website, so answers always match the problems. Free, no sign-up, US Letter by default.

Popular uses

  • Fraction units
  • Small-group practice
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  • Review before a test

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Frequently asked questions

How do I pick the right level?
Choose an age or grade in step 2. Start easier if the pupil is unsure – you can switch anytime and get new problems instantly.
Can I see the problems before printing?
Yes. The sheet shows exactly the problems that will print. Click New problems to swap them.
How do I include an answer key?
Turn on Answer key in the last step. It prints on its own page after the problems, with the same numbering.
What does the question mark next to a problem do?
It opens a step-by-step explanation of the method on screen. It is not printed and does not reveal the answer.
How do you find a fraction of a number?
Divide by the denominator, then multiply by the numerator. 2/3 of 12: 12 ÷ 3 = 4, 4 × 2 = 8.
Are the answers whole numbers?
Yes, every problem is chosen so it works out evenly.

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