Adding and Subtracting Unit Fractions — Interactive Lesson (Ages 11–13)

☆☆☆☆☆ Add your review • Year 7–8 • 🎓 Interactive Lesson & Activities

A 15-slide interactive KS3 lesson on adding and subtracting unit fractions: what a unit fraction is, common denominators and making a whole.

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What happens when you subtract a unit fraction from itself? This 15-slide interactive lesson introduces unit fractions and how to add and subtract them.

Mastering Unit Fractions in Year 7–8 Maths

A unit fraction is a fraction with a numerator of 1. Students learn to understand what a unit fraction is, then to add and subtract unit fractions. They use an image to complete a calculation, evaluate expressions, complete missing denominators and place the answer on a number line. They also work out how many of a fraction make a whole, such as how many sevenths are needed, and are reminded of equivalent fractions.

What’s Included

15-slide interactive lesson on adding and subtracting unit fractions
Learning objectives on understanding and calculating with unit fractions
Picture-based calculations and missing-denominator questions
A number line activity and a making-a-whole question
A review quiz with instant feedback

Key Benefits for Students

Builds a secure understanding of unit fractions
Links fraction calculations to pictures and number lines
Reinforces equivalent fractions
Instant feedback on answer questions

Why Teachers Love It

No prep — ready for whole-class teaching on an interactive whiteboard
A concise lesson that fits a single session
Self-marking questions support independent practice
Suits teaching, revision and homework
A gentle first step before adding any fractions

Love this? You’ll love…

A dependable start to a KS3 fractions topic, giving students a simple, visual entry to adding and subtracting fractions. Unit fractions are the building blocks for every later fraction calculation.

Build confident fraction skills today — Add to Basket.

FAQ

What year group is this for? KS3 — Years 7–8 (ages 11–13).

Does it use number lines? Yes — students place answers on a number line.

Is it self-marking? Yes, with instant feedback on the questions.

Year Groups	Year 7–8
Resource Type	🎓 Interactive Lesson & Activities
Format	Digital Only
Curriculum	England & Wales — KS3 (Years 7–8)
Added	4 March 2026