Year 3 - Maths
Identify non-unit fractions
Non-unit fractions
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will explain that non-unit fractions are composed of more than one unit fraction using knowledge of unit fractions to find one whole.
Lesson Summary
You will learn to identify non-unit fractions.
Key Notes
- A non-unit fraction has a numerator greater than 1; it is composed of more than one unit fraction.
- We say, 'the whole has been divided into ___ equal parts, and I have ___ of them'.
- When writing fractions, the numerator is the top number showing the number of equal parts we have.
- The denominator is the bottom number showing the number of equal parts the whole has been divided into.
Vocabulary To Learn
- Division bar: The division bar is the horizontal line separating the two values in a fraction.
- Denominator: A denominator is the bottom number in a fraction.
- Numerator: A numerator is the top number in a fraction.
Common Mistakes To Avoid
- Pupils may count the number of equal parts that are shaded and write the numerator and then count the number that are not shaded and write the denominator.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
A non-unit fraction has a numerator greater than 1; it is composed of more than one unit fraction. We say, 'the whole has been divided into ___ equal parts, and I have ___ of them'.
2. Use this key word in a maths sentence and explain it clearly. 'Division bar'
The division bar is the horizontal line separating the two values in a fraction. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may count the number of equal parts that are shaded and write the numerator and then count the number that are not shaded and write the denominator. Correction: Ensure that pupils count all of the equal parts to find the denominator. The denominator is the number of equal parts that make up whole. We encourage children to find, and then describe, the denominator before the numerator.
More Lessons In This Unit
- Compare fractions with the same numerator Study Guide
- Compare non-unit fractions including those equal to 1 Study Guide
- Compare non-unit fractions with the same denominator Study Guide
- Explain that non-unit fractions are made of more than one unit fraction Study Guide
- Identifying equal parts in a whole in different contexts Study Guide
- Place fractions between 0 and 1 on a number line Study Guide
- Review comparing unit fractions Study Guide
- Use knowledge of non-unit fractions to solve problems Study Guide
- Use knowledge of unit fractions to find one whole Study Guide
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