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What fraction of the black bar are the other bars? Have a go at this challenging task!

Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?

This challenge involves eight three-cube models made from interlocking cubes. Investigate different ways of putting the models together then compare your constructions.

There were cola bottles for 10p, mini eggs for 15p, marshmallow twists for 25p and lollipops for 35p in the sweet shop. What could each of the children buy with their money?

Under what circumstances can you rearrange a big square to make three smaller squares?

Take a look at the multiplication square. The first eleven triangle numbers have been identified. Can you see a pattern? Does the pattern continue?

On a digital 24 hour clock, at certain times, all the digits are consecutive. How many times like this are there between midnight and 7 a.m.?