Financial mathematics — Topic Review | Year 9

QUICK RECAP

Connect the ideas

Use the original amount as the base for percentage change.

Convert annual rates to decimals and time to years in simple-interest models.

Separate fixed and variable costs; compare whole rules, not only their intercepts.

A budget needs all costs, reserves and realistic income assumptions.

Quadratic models have changing first differences; justify the context and domain.

Check units, substituted solutions, rounding and practical limits.

Complete each paper and show your working.

Financial mathematics — Practice 1
16 questions · 44 marks · 60 minutes · Scientific calculator
Percentages, simple interest, fixed costs, budgets and model checks.
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Financial mathematics — Practice 2
16 questions · 44 marks · 60 minutes · Scientific calculator
A different mix of reverse percentages, model comparisons and financial assumptions.
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Financial mathematics — Applications
16 questions · 49 marks · 60 minutes · Scientific calculator
A camp budget, transport choices and constrained financial models.
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