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Chapter 11: Introducing indices Notes
Divisibility tests, prime and composite numbers, index notation, prime decomposition, squares, square roots, cubes and cube roots, and the first index laws.
Sections
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11A Divisibility tests Mastered
Quick tests to check whether a number is divisible by 2, 3, 4, 5, 6, 8, 9 and 10 without dividing.
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11B Prime numbers and prime decomposition Mastered
Prime and composite numbers, factor trees, and writing a number as a product of its prime factors using index notation.
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11C Index notation, squares and square roots Mastered
Writing repeated multiplication with index notation, evaluating powers, perfect squares and cubes, and square roots and cube roots.
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11D The index laws and the zero index Mastered
The first index laws: multiplying and dividing powers with the same base, and why any non-zero number to the power zero equals one.