15n: Find simple percentages of an amount like 50%, 25%, 10%, 5%, 1%
26n: Finding any percentage of an amount by combining simple percentages
38n: Converting between decimals and percentages (and to fractions)
51n: Increase or decrease an amount by a percentage and calculate simple interest
65n: Calculate compound interest using repeated percentage change
66n: Writing a change as a percentage
67n: Using percentage multipliers for change and understand the effect of multiplying by numbers above or below 1
70n: Calculate compound interest using a percentage multiplier
71n: Reverse percentage change using a multiplier (or otherwise)
