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Biscuit Decorations

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

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Spelling Circle

Find the words hidden inside each of the circles by counting around a certain number of spaces to find each letter in turn.

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Multiplication Squares

Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.

Turning Cogs

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3
Do both cogs turn in the same direction?
With two cogs that have five teeth, will the marked tooth on one cog eventually fit in every gap of the other cog as they turn? Why or why not?
What happens if you pick a cog with five teeth and a cog with 6 teeth?