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Can you select the missing digit(s) to find the largest multiple?
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Given the products of adjacent cells, can you complete this Sudoku?
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A game in which players take it in turns to choose a number. Can you block your opponent?
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How much can you read into a T-shirt?
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Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
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A country has decided to have just two different coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?
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How much of the square is coloured blue? How will the pattern continue?
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How many different number families can you find?
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Follow this recipe for sieving numbers and see what interesting patterns emerge.
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Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
