Number Maths Lessons & Worksheets (KS3, GCSE, IGCSE & A-Level)

Curriculum Hub → Maths Lessons → Number

Find ready-to-teach number lessons for KS3, GCSE, IGCSE and selected A-Level topics — including presentations, printable worksheets, differentiated questions and exam-style practice.

Choose a topic below to open the full lesson sequence. Each number unit is organised to help you plan faster, teach confidently and support progression from first teaching through to revision.

Jump to: Core Number Topics  |  Advanced Number Topics  |  Membership Options  |  FAQs

Unlock every number lesson instantly

Save hours of planning with complete number lesson packs ready to use straight away. Membership gives you access to downloadable PowerPoints, printable worksheets, differentiated questions and exam-style practice across KS3, GCSE, IGCSE and selected A-Level number topics.

  • Download full lesson presentations and worksheets
  • Use ready-made questions for teaching, cover, homework and revision
  • Access the wider Mr Mathematics lesson library, not just number

Need access for a department? School membership gives multiple teachers access from the purchasing school.

Core Number Topics (KS3, GCSE & IGCSE)

Start here for the most frequently taught number strands across Key Stage 3 and GCSE / IGCSE.

Accuracy, rounding, estimation, error intervals and limits of accuracy KS3 and GCSE number lessons

Accuracy and Rounding

Rounding • Estimation • Error intervals • Limits of accuracy

Open accuracy and rounding resources

Fractions decimals and percentages equivalence lessons for KS3 and GCSE maths

Equivalence (F, D, P)

Fractions • Decimals • Percentages

Open FDP equivalence resources

Decimal arithmetic maths lessons covering addition subtraction multiplication and division

Working with Decimals

Add • Subtract • Multiply • Divide

Open decimal arithmetic resources

Fractions and mixed numbers KS3 and GCSE number teaching resources

Fractions & Mixed Numbers

Equivalence • Add • Subtract • Multiply • Divide

Open fraction lesson resources

Number properties maths lessons covering factors multiples primes HCF and LCM

Number Properties

Factors • Multiples • Primes • HCF • LCM

Open factors and multiples resources

Percentages maths lessons covering percentage of amounts percentage change and reverse percentages

Percentages

Percentage of amounts • Changes • Reverse percentages

Open percentage resources

Place value maths lessons on writing numbers and multiplying and dividing by powers of ten

Place Value

Writing numbers • Multiplying by 10, 100… • Dividing by 10, 100…

Open place value resources

Ratio and proportion maths lessons covering sharing combined ratios and proportional reasoning

Ratio and Proportion

Sharing • Equivalence • Combined ratios • Proportional reasoning

Open ratio and proportion resources

Featured image for Mr Mathematics negative numbers hub page, showing lesson categories: Number, All Levels, Negative Numbers, and the four operations (Addition, Subtraction, Multiplication, Division), with the tagline "Maths Lessons to Engage and Inspire.

Negative Numbers

Addition • Subtraction • Multiplication • Division

Open negative numbers resources

Planning for a maths department?

School membership gives multiple teachers access to the full Mr Mathematics library. Ideal for departments who want consistent lesson sequencing, shared resources and ready-to-teach materials across KS3, GCSE, IGCSE and A-Level.

Advanced Number Topics (A-Level)

Use this topic for A-Level number methods, including indices, surds, standard form and rationalising denominators.

Indices surds standard form and A-Level number techniques maths lessons

Indices & Standard Form

Indices • Surds • Standard form • Rationalising denominators

Open indices and standard form resources

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What’s in each number lesson set?

  • Lesson order you can follow across a half-term or intervention block
  • Slides for clear modelling and checking understanding
  • Worksheets and practice that escalates in demand
  • Exam-style tasks to consolidate fluency and problem solving

Ready to stop searching for number resources?

Get instant access to the full Mr Mathematics library and download the lessons, worksheets and practice tasks you need for tomorrow’s teaching.

Frequently asked questions about number lessons

Is this hub suitable for both KS3 and GCSE number revision?

Yes. Use the topic pages to teach the core ideas in Key Stage 3, then return for GCSE exam-style practice in Years 10 and 11, especially for high-frequency number topics such as fractions, percentages, ratio and standard form.

Are there A-Level number lessons included?

Yes. The number hub includes A-Level content in indices, surds and standard form, including rationalising denominators.

Where are algebra, geometry, statistics and mechanics lessons?

Start from the main Maths Lessons directory to open Algebra, Geometry, Statistics and Mechanics where available.

Do I need membership to use these number lessons?

Topic pages are designed to help you find the right resource quickly. Membership unlocks downloads and the full site library, including presentations, worksheets and the wider lesson collection.

Mr Mathematics Blog

Developing Mathematical Thinking Beyond Procedural Fluency

A research-backed case exploring why over-reliance on automated math homework platforms and repetitive worksheets lowers student expectations, and how departments can build genuine mathematical thinking.

Converting Between Fractions, Decimals and Percentages

How to teach converting between fractions, decimals and percentages.

From Key Skills to Deep Connections: Problem Solving in Secondary Maths

Four problem solving lessons to develop student’s mathematical reasoning and communication skills.