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Year 3 - Maths

Identifying equal parts in a whole in different contexts

Non-unit fractions

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 the number of equal or unequal parts in a whole in different contexts.

Key Notes

  • A non-unit fraction labels more than one out of the number of equal parts in the whole.
  • A fraction is made from equal parts of the whole.
  • Parts can be different shapes and still be the same size.
  • When counting different objects that make a whole, the objects can be of unequal size.

Vocabulary To Learn

  • Equal: Equal means exactly the same amount or value.
  • Unequal: Unequal means not exactly the same amount or value.

Common Mistakes To Avoid

  • Pupils may find the concept of different shapes (and sizes, for number of objects) a little confusing.

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 labels more than one out of the number of equal parts in the whole. A fraction is made from equal parts of the whole.

2. Use this key word in a maths sentence and explain it clearly. 'Equal'

Equal means exactly the same amount or value. 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 find the concept of different shapes (and sizes, for number of objects) a little confusing. Correction: Show pupils images where parts are different shapes (area fractions - parts of a whole shape) but can easily be seen to be the same size.

More Lessons In This Unit

Browse all guides in the Year 3 Maths guide library.