Explain how to subtract related unit fractions
I can explain how to subtract related unit fractions
Explain how to subtract related unit fractions
I can explain how to subtract related unit fractions
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Fractions need to have the same denominator if you are to subtract them.
- Common multiples help you to convert a fraction to a common denominator.
- The language of unitising helps you to subtract fractions with the same denominators.
- When subtracting fractions with the same denominators you just subtract the numerators.
Keywords
Related fractions - When the denominator of one fraction is a multiple of the denominator of another fraction, we can say these fractions are related fractions.
Common denominator - When two or more fractions share the same denominator, you can say they have a common denominator.
Common misconception
Pupils try to subtract the numerators and the denominators from one another for each fraction.
Represent each fraction using a model that draws out the equivalence of the fractions and the need for the same counting unit (denominator). Revisit previous analogies regarding sharing a common counting unit such as animals for cats and dogs.
To help you plan your year 6 maths lesson on: Explain how to subtract related unit fractions, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 6 maths lesson on: Explain how to subtract related unit fractions, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Addition and subtraction of fractions unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions



Exit quiz
6 Questions


