What this topic covers
Number has 3 subtopics:
- Structure and calculation
- Fractions, decimals and percentages
- Measures and accuracy
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IGCSE Edexcel Higher Maths · Topic 1 of 12
Number – IGCSE Edexcel Higher Maths revision notes
Choose a subtopic. Number covers Structure and calculation, Fractions, decimals and percentages, and Measures and accuracy in IGCSE Edexcel Higher Maths. 22 lessons in 3 subtopics.
Revise Number for IGCSE Edexcel Higher Maths, including Structure and calculation and Fractions, decimals and percentages. 22 lessons across 3 subtopics.
22
Lessons
3
Subtopics
Number lessons by subtopic
22 lessons, grouped by subtopic.
Structure and calculation
- 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
- Systematic Listing Strategies
- Powers and Roots
- Laws of Indices and Fractional Powers
- Working with Indices and Roots
- Calculating Exactly with Fractions
- Understanding and Calculating with Standard Form
Fractions, decimals and percentages
- Converting Between Terminating Decimals and Fractions
- Fractions in Ratio Problems
- Understanding Fractions and Percentages as Operators
Measures and accuracy
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
What is Number?
Number covers Structure and calculation, Fractions, decimals and percentages, and Measures and accuracy in IGCSE Edexcel Higher Maths. 22 lessons in 3 subtopics.
What is a prime number?
A prime number is a positive integer greater than 1 with exactly two distinct factors: 1 and itself. The Prime Numbers, Factors and Multiples notes cover this in full.
Is 1 a prime number?
1 is not a prime number. The Prime Factorisation and Product Notation notes cover this in full.
How do you multiply fractions?
To multiply fractions, multiply across the top and across the bottom, with no need for a common denominator. The Calculating Exactly with Fractions notes cover this in full.
What is the formula for speed?
Speed = distance ÷ time, so distance = speed × time and time = distance ÷ speed. The Standard Units and Compound Measures notes cover this in full.
What does the less than or equal to symbol mean?
The symbol ≤ means less than or equal to, and ≥ means more than or equal to. The Ordering Numbers and Using Inequality Symbols notes cover this in full.
What does the greater than or equal to symbol mean?
The ≥ symbol means a value is bigger than or the same as another. The Ordering Numbers and Using Inequality Symbols notes cover this in full.
How do you find the LCM using prime factorisation?
To find the LCM using prime factorisation, take the highest power of each prime that appears in any of the numbers and multiply them. The Common Factors and Multiples notes cover this in full.
How do you find the HCF using prime factorisation?
To find the HCF using prime factorisation, write both numbers as products of primes and multiply the lowest power of each common prime. The Common Factors and Multiples notes cover this in full.