Here are 20 coins in a jar. If one quarter of them is 5, how much do you think three quarters would be? Have a guess before we work it out.
Look at each strip split into equal parts, with some of them shaded. Each time, work out the size of one part first, then count how many parts we want. Keep your eye on that first step.
Today we work these together on the board, always in two steps. We'll shade three quarters of 12 first, then two thirds of 15, then three fifths of 20, and finally three quarters of 16. Each time we find one part first, then take the parts we need.
In your maths copy, write out the two steps for three quarters of 20, like this:
Then do two thirds of 9 the same way: find one third first, then take two of those parts.
Today we work through these together on the board: show three quarters of 8, then two thirds of 12, then three fifths of 15, and finally three quarters of 24. They get a little bigger each time, so find one part first every time.
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