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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?
Age 5 to 7 Challenge Level:
Here are some pictures of people throwing things in Olympic events.
The first one shows a man throwing a hammer and the second shows a man throwing a discus.
They can throw them a long way. A recent Olympic record for throwing the hammer was about $80$ adult paces and for throwing the discus was about $70$ adult paces.
How far can you throw a beanbag?
Can you throw a beanbag $70$ paces?
Can you throw a beanbag $80$ paces?
Photograph acknowledgements http://armyphoto.wordpress.com/ http://en.wikipedia.org/wiki/File:Zoltan_Kovago_o.jpg
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.