Factors and multiples
problem
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What numbers can we make now?
Imagine we have four bags containing numbers from a sequence. What numbers can we make now?
problem
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5 by 5 Mathdokus
Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
problem
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4 by 4 Mathdokus
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
problem
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Three neighbours
Take three consecutive numbers and add them together. What do you notice?
game
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Dicey array
Watch the video of this game being played. Can you work out the rules? Which dice totals are good to get, and why?
problem
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Are you well balanced?
Can you work out how to make each side of this balance equally balanced? You can put more than one weight on a hook.
problem
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Tables teaser
How will you work out which numbers have been used to create this multiplication square?
problem
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Gabriel's problem
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?