Before you start: Please note that Americans use a comma to separate the hundreds place from the thousands place, e.g. one thousand three hundred and twenty would be written as 1,320. Please just bear this in mind when working through these exercises on Khan Academy
Adding and subtracting numbers to at least six digits
Prime factors of numbers to at least 100
List prime factors of numbers to at least 3 digit whole numbers by factorisation
Sharing a given ratio when the whole is given
Solve problems involving whole numbers, percentages and decimals in a financial context
Commutative, associative and distributive properties of numbers
Calculation techniques such as estimation, rounding off and compensation
Profit, loss and discount
Using a calculator
Budgets and accounts