Add and subtract fractions with the same denominator in a range of contexts
I can add and subtract fractions with the same denominator in a range of contexts.
Add and subtract fractions with the same denominator in a range of contexts
I can add and subtract fractions with the same denominator in a range of contexts.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- If fractions have the same denominator they can be added or subtracted.
- Number lines can represent addition and subtraction of fractions with the same denominator.
- When you add or subtract fractions with the same denominator you add or subtract the numerators.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - A subtrahend is a number subtracted from another. There can be more than one.
Numerator - A numerator is the top number in a fraction. It shows how many parts we have.
Denominator - A denominator is the bottom number in a fraction. It shows how many parts a whole has been divided into.
Common misconception
Children might still try to add or subtract the denominators as well due to a misunderstanding about the denominator showing what unit-fraction is being used for calculation.
By this stage, buddy checking can be useful. Get the children to check each other periodically but ensure that children can also explain why this is incorrect.
To help you plan your year 3 maths lesson on: Add and subtract fractions with the same denominator in a range of contexts, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Add and subtract fractions with the same denominator in a range of contexts, 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 Composition of non-unit fractions: addition and subtraction unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions

