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Index Laws

Revise Index Laws in Number for GCSE Mathematics with 14 exam-style questions and 22 flashcards. This is a very high-frequency exam topic, so it is worth revising until the core ideas feel automatic.

Sample Flashcards

Division Law
aᵐ ÷ aⁿ = aᵐ⁻ⁿ SUBTRACT the powers Example: 5⁶ ÷ 5² = 5⁴
Zero Power Law
a⁰ = 1 ANY number to power 0 equals 1 (except 0⁰ which is undefined) Examples: 5⁰ = 1, 100⁰ = 1

Sample Questions

Which of these is equivalent to a³ × a⁵?

  • A. a⁸
  • B. a¹⁵
  • C.
  • D. 2a⁸
1 markstandard

Simplify a⁵ × a³

1 markfoundation

14

exam-style questions

22

revision flashcards

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