What this topic covers
Topic 1: Numbers and the Number System has 5 subtopics:
- Integers and Operations
- Fractions, Decimals and Percentages
- Powers, Roots and Standard Form
- Ratio and Proportion
- Accuracy, Estimation and Units
IGCSE Edexcel Higher Maths
Topic 1: Numbers and the Number System – IGCSE Edexcel Higher Maths revision notes
Revise Topic 1: Numbers and the Number System for IGCSE Edexcel Higher Maths, including Integers and Operations and Fractions, Decimals and Percentages.
IGCSE Mathematics A Topic 1: Numbers and the Number System. 30 lessons in 5 subtopics.
30
Lessons
5
Subtopics
Topic 1: Numbers and the Number System lessons by subtopic
30 lessons, grouped by subtopic.
Integers and Operations
- Ordering Numbers and Using Inequality Symbols
- Place Value and Number Size
- The Four Operations with Different Number Types
- Order of Operations (BIDMAS/BODMAS)
- Inverse Operations and Simplifying Calculations
- Common Factors and Multiples
- Prime Factorisation and Product Notation
- Prime Numbers, Factors and Multiples
Fractions, Decimals and Percentages
- Converting Between Terminating Decimals and Fractions
- Recurring Decimals as Fractions
- Understanding Fractions and Percentages as Operators
- Percentage Basics and Percentage of Amounts
- Comparing and Working with Percentages
- Percentage Change and Financial Applications
Powers, Roots and Standard Form
- Powers and Roots
- Laws of Indices and Fractional Powers
- Working with Indices and Roots
- Surds and Rationalising Denominators
- Calculating Exactly with Fractions
- Understanding and Calculating with Standard Form
Ratio and Proportion
- Simplifying and Interpreting Ratios
- Dividing Quantities Using Ratios
- Ratio in Real-World Contexts
- Expressing Multiplicative Relationships as Ratios and Fractions
- Understanding Proportion as Equality of Ratios
Accuracy, Estimation and Units
More in this course
Go back to the full IGCSE Edexcel Higher Maths topic list, or practise this topic with past-paper questions.
Frequently asked questions
Is this the right Topic 1: Numbers and the Number System page for my course?
These notes are for IGCSE Edexcel Higher Maths. If you are on a different exam board or tier, choose your course from the Maths page instead, because the content is not always the same.
What should I do after reading the lessons?
Test yourself without the notes open, then try past-paper questions on the same topic. The questions you get wrong tell you which lesson to go back to.