What you'll learn
Working with all types of number.
Key skills
- Fractions, decimals, percentages and conversions; percentage change.
- Indices and standard form; primes, HCF, LCM; surds; ratio.
Exam tips
- Show every step; check the required form.
- Use multipliers for percentage change.
Common mistakes
- Order-of-operations errors.
- Adding indices instead of multiplying.