Adding and Subtracting Fractions with Different Denominators — Interactive Lesson (Ages 11–14)

Is finding a common denominator still tripping up your class? This 19-slide interactive lesson breaks adding and subtracting fractions with different denominators into clear, guided steps, with instant feedback along the way so mistakes get corrected before they turn into bad habits.

Mastering Adding and Subtracting Fractions in KS3 Maths

Pupils work through finding common denominators, converting fractions and combining them accurately — core skills within the KS3 National Curriculum area of number and fractions. Breaking the method into small, sequential steps helps pupils see exactly where a calculation can go wrong, rather than just being shown the final answer.

What’s Included

• 19-slide interactive lesson
• Step-by-step guidance on finding common denominators
• Self-marking practice questions with instant feedback

Key Benefits for Students

• Breaks down a tricky process into manageable, guided steps
• Instant feedback helps pupils spot and correct mistakes immediately
• Builds confidence before moving on to mixed-number calculations

Why Teachers Love It

• No prep — open and teach straight away
• Works on any interactive whiteboard or shared screen
• Self-marking activities free you up to support individual pupils
• A solid foundation before moving on to mixed-number calculations

Love this? You’ll love…

• Angle Sums and Properties of Regular Polygons — Flashcard Game (Ages 11–14)
• Order Of Operations — Interactive Lesson (Year 7)
• Finding The Range | Measures Of Dispersion — Interactive Lesson (Year 7)
• Dealing With Money — Interactive Lesson (Year 7)

Add to Basket today.

FAQ

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

Does it cover mixed numbers? It focuses on adding and subtracting fractions with different denominators.

Is it self-marking? Yes, instant feedback throughout.