Number Formulas – IGCSE Maths
Every number formula you need for Cambridge IGCSE Mathematics 0580, with clear explanations of when and how to use each one.
Percentage change = (change / original) × 100
CoreKey formula for number in IGCSE Maths.
When to Use
Use when working with number problems.
Show your substitution clearly for method marks.
Compound interest
CoreKey formula for number in IGCSE Maths.
When to Use
Use when working with number problems.
Show your substitution clearly for method marks.
Standard form
CoreKey formula for number in IGCSE Maths.
When to Use
Use when working with number problems.
Show your substitution clearly for method marks.
Upper bound = value + ½ unit
CoreKey formula for number in IGCSE Maths.
When to Use
Use when working with number problems.
Show your substitution clearly for method marks.
HCF and LCM by prime factorisation
CoreKey formula for number in IGCSE Maths.
When to Use
Use when working with number problems.
Show your substitution clearly for method marks.
Struggling to remember these formulas?
Teacher Rig helps students master them through practice, not memorisation.
Book a Free TrialFrequently Asked Questions
Which number formulas are given in the exam?
Check the IGCSE formula sheet provided in your exam. Some number formulas must be memorised.
How do I remember number formulas?
Practice using them in past paper questions. Repeated application is more effective than rote memorisation.
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