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Summary Index Laws GCSE WJEC Maths

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This powerpoint is an excellent explanation and summary of the key part of the WJEC GCSE new maths course which includes examples and a test at the end with a challenge question.

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Index Laws
Simple Tips and Tricks

,What is an Index?
An index (or power) tells you how many times a number is multiplied by
itself.



Examples:

2³ = 2 x 2 x 2 = 8 The base is the number being
multiplied.
5² = 5 x 5 = 25
The index tells you how many
10 = 10,000
4
times.

, Index Law 1 - Multiplying Powers

Rule - When multiplying powers with the same base, add the indices.

am x an = am+n



Examples:

23 x 25 y4 x y7 = y11

= 23+5

= 28

= 256

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GCSE
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1
Uploaded on
July 12, 2026
Number of pages
16
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Summary
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