#2.03a
Convert between fractions, decimals and percentages.
e.g. \(\dfrac{1}{4} = 0.25 = 25\%\)
\(1\dfrac{1}{2} = 150\%\)
#2.03b
Understand percentage is ‘number of parts per hundred’.
Calculate a percentage of a quanity, and express one quantity as a percentage of another, with or without a calculator.
#2.03c
Increase or decrease a quantity by a simple percentage, including simple decimal or fractional multipliers.
Apply this to simple original value problems and simple interest.
e.g. Add 10% to £2.50 by either finding 10% and adding, or by muliplying by 1.1 or \(\dfrac{110}{100}\)
Calculate original price of an item costing £10 after a 50% discount.
Express percentage change as a decimal or fractional multiplier. Apply this to percentage change problems (including original value problems).
[see also Growth and decay, 5.03a]