Maths Library Australia Year 9 Year 9 maths, age 14 to 15 In Year 9 mathematics, Australian students extend their understanding of numbers to index laws, scientific notation, and financial mathematics involving percentage changes. They develop algebraic techniques including expanding binomials, factorising monic quadratics, solving linear equations and inequalities, and graphing linear relations. Students also apply Pythagoras' theorem, calculate surface area and volume of composite solids, and evaluate probabilities of compound events.
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Equivalent levels Topics Number Percentages Algebra Measurement Ratio Geometry Statistics Probability Curriculum items Indicative, from Australian Curriculum v9. See the official document for the authoritative text.
AC9M9N01 Apply the index laws to numerical expressions with integer powers and represent numbers in scientific notation.AC9M9N04 Solve financial mathematics problems involving simple interest and percentage change.AC9M9A01 Apply the index laws with positive-integer exponents to simplify algebraic expressions.AC9M9A02 Expand algebraic expressions, including binomial expansions, and factorise monic quadratic and linear expressions.AC9M9A03 Solve linear equations and linear inequalities algebraically, displaying solutions on number lines.AC9M9A04 Graph linear relations on the Cartesian plane, determining gradients and intercepts.AC9M9M01 Calculate areas and perimeters of composite two-dimensional shapes involving circular components.AC9M9M03 Calculate rates and solve problems involving compound units such as speed, distance, and time.AC9M9SP01 Apply Pythagoras' theorem to find unknown side lengths in right-angled triangles in practical situations.AC9M9ST01 Compare and analyse data sets using measures of centre and spread including the mean, median, and range.AC9M9P01 Calculate relative frequencies and theoretical probabilities for two-step chance experiments. Previous: Year 8 | Next: Year 10