Basic Percentage Calculations — Interactive Lesson (Ages 11–14)

☆☆☆☆☆ Add your review • Year 7–9 • 🎓 Interactive Lesson & Activities

An interactive KS3 lesson on basic percentage calculations: finding a percentage of a quantity, the complement of a percentage and sale-price problems.

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Can your students work out a sale price? This interactive lesson builds confidence in basic percentage calculations using real-life contexts.

Mastering Basic Percentage Calculations in Year 7–9 Maths

The lesson objective is to calculate simple percentages, including in context. Students find a percentage of a quantity, such as 75% of 60 tickets, and use the complement of a percentage, for example working out the percentage of girls when 35% of a class are boys. They also calculate sale prices, such as 20% off £40, and compare which of two reductions is greater. Calculator use is allowed. Contexts include a shop’s t-shirts, concert tickets and sharing earnings between two friends.

What’s Included

Interactive lesson on basic percentage calculations
Learning objective on calculating simple percentages in context
Percentage of a quantity and complement problems
Sale-price questions with marked prices and reductions
Drag-and-drop and question pages with instant feedback

Key Benefits for Students

Builds fluency finding a percentage of an amount
Connects percentages to shopping and sale prices
Practises reverse and complement thinking
Instant feedback on answer questions

Why Teachers Love It

No prep — ready for whole-class teaching on an interactive whiteboard
Real-life contexts keep students engaged
Self-marking questions support independent practice
Suits teaching, revision and homework
A clear next step after an introduction to percentages

Love this? You’ll love…

A dependable addition to a KS3 percentages unit, giving students plenty of practice applying percentages to everyday problems. These skills lead naturally into percentage change and financial maths.

Make percentages practical — Add to Basket.

FAQ

What year group is this for? KS3 — Years 7–9 (ages 11–14).

Does it include sale-price questions? Yes — students calculate reductions and new prices.

Can students use a calculator? Yes, calculator use is allowed.

Year Groups	Year 7–9
Resource Type	🎓 Interactive Lesson & Activities
Format	Digital Only
Curriculum	England & Wales — KS3 (Years 7–9)
Added	4 March 2026