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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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Constant Counting

You can make a calculator count for you by any number you choose. You can count by ones to reach 24. You can count by twos to reach 24. What else can you count by to reach 24?

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Making Sticks

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?

Skip Counting

Age 5 to 7 Challenge Level:

Find the squares that Froggie skips onto to get to the pumpkin patch.

She starts on $3$ and finishes on $30$, but she lands only on a square that has a number $3$ more than the square she skips from.

A numbered grid for Froggie to fidn her way to the pumpkin patch.

Is there more than one way that Froggie can get to the pumpkins?

Printable NRICH Roadshow resources: Instructions and Gameboards