Demystifying - Negative fractional indices

Author note — to cover (Higher)

Higher only. Combining reciprocal, root and power to evaluate 8 to the -2/3 or (25/16) to the -1/2, rooting first to keep numbers small and inverting fractional bases first. Assumes every earlier index page; equations with unknown fractional indices belong to A level. (N7)

Introduction

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Practice and continue

Practice

Index laws review

Negative and fractional indices.

Mixed review Next lesson

Standard form

Converting both ways for large and small numbers, and correcting near-misses.