Here you can find past papers for AQA GCSE Maths ... The ratio 16 : 4 is equivalent to 4 : 1. To form an equivalent ratio we multiply both numbers in the ratio by the same number.

While calculators aren’t allowed in Paper 1, you should make good use of your ... There are a few key question words that are specific to the IB maths paper, such as “state”, “write ...