To understand combined ratio.
To understand proportion in a range of different contexts.
To understand how to work with exchange rates.
To use proportion to determine 'the best buy'.
To use proportion and ratio using human population facts that are of interest.
To understand how to calculate speed, distance and time.
To identify what irrational and rational numbers are.
To convert recurring decimals to fractions and vice versa.
To understand how to calculate compound interest and depreciation.
To understand how to rearrange compound interest and depreciation formulas to calculate other unknowns.