Solve simple problems in a practical context involving addition and subtraction of money of the same unit, including giving change

What this means, in plain words

Money uses pounds and pence, which behave like whole numbers and hundredths, so it doubles as decimal practice.

This is problem solving: the maths is met inside a situation, so the first job is working out which operation the question is asking for.

Addition puts amounts together to find a total. Subtraction takes one amount away, or finds the difference between two.