O Level
O-Level Elementary Mathematics: Indices & Standard Form: Speed Drills
•By Intuitional Team•1 min read
O-Level Elementary Mathematics — Indices & Standard Form: Speed Drills: quick notes, common traps, and an exam-style example.
Indices
aᵐ × aⁿ = aᵐ⁺ⁿ, aᵐ/aⁿ = aᵐ⁻ⁿ, (aᵐ)ⁿ = aᵐⁿ. Negative powers mean reciprocals, fractional powers mean roots.
Standard form
Numbers written as A × 10ⁿ, with 1 ≤ A < 10. Useful for handling very large/small values.
Exam habits
- Check calculator mode (standard form display settings).
- Express final answers with 3 s.f. unless stated.
- Practise laws of indices until automatic.
Tags
O-LevelElementary MathematicsIndices & Standard Form