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Number Archive

Arithmetic (47)

Mental Calculation (26)

Factors, Multiples and Primes (22)

Integers, Powers and Roots (50)

Ratio and Proportion (8)

Working with Fractions, Decimals and Percentages (75)

Estimation and Appoximation (including bounds) (19)

Rational and Irrational Numbers (2)

Effective Use of a Calculator (2)

Revision / Review / Miscellaneous (8)