GCSE Maths OCR J560

Convert between fractions, decimals and percentages.

e.g. $\dfrac{1}{4} = 0.25 = 25\%$

$1\dfrac{1}{2} = 150\%$

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.

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