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Andy had a big bag of marbles but unfortunately the bottom of it split and all the marbles spilled out. Use the information to find out how many there were in the bag originally.

These sixteen children are standing in four lines of four, one behind the other. They are each holding a card with a number on it. Can you work out the missing numbers?

A 750 ml bottle of concentrated orange squash is enough to make fifteen 250 ml glasses of diluted orange drink. How much water is needed to make 10 litres of this drink?

Can you make a cycle of pairs that add to make a square number using all the numbers in the box below, once and once only?

Cut differently-sized square corners from a square piece of paper to make boxes without lids. Do they all have the same volume?

What do you think is going to happen in this video clip? Are you surprised?

Peter wanted to make two pies for a party. His mother had a recipe for him to use. However, she always made 80 pies at a time. Did Peter have enough ingredients to make two pumpkin pies?

Can you find out which 3D shape your partner has chosen before they work out your shape?

Six samples were taken from two distributions but they got muddled up. Can you work out which list is which?