Build knowledge of fraction equivalence beyond halves and quarters to recognise that 1/8 is 12 ½% as it is half of 25%. 33 1/3 is 1 third, 10% is 1 tenth and so on. Model and practise the use of these in combination to find percentages mentally (e.g. for 45% of a quantity, find 50% and subtract half of 10%)

Build knowledge of fraction equivalence beyond halves and quarters to recognise that 1/8 is 12 ½% as it is half of 25%. 33 1/3 is 1 third, 10% is 1 tenth and so on. Model and practise the use of these in combination to find percentages mentally (e.g. for 45% of a quantity, find 50% and subtract half of 10%)