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Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?

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Sweets in a Box

How many different shaped boxes can you design for 36 sweets in one layer? Can you arrange the sweets so that no sweets of the same colour are next to each other in any direction?

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Maze 100

Can you go through this maze so that the numbers you pass add to exactly 100?

Twenty Divided Into Six

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

What number do all the cards add to?
What will the total of each pile be?
How will you keep track of the piles you have made? You might find digit cards useful.