Finding Palindromes

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How many four-digit palindromes exist?

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Unknown Ages

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If Roberto was born on his grandmother’s birthday, how old are Roberto and his grandmother now?

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The Secret Pocket

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How many of each kind of coin does Keith have in his secret pocket?

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Products and Sums

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Find a decimal number that meets certain requirements.

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Remainder Shells

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How many shells does Ken have in his shell collection?

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Magic Square

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Place the numbers in the diagram’s squares in a special way to create a magic square.

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Aiming for Combinations

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Annie shoots three arrows that all land inside rings of an archery target. What were her three scores?

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Tallying an Election

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Determine the number of votes a particular candidate could have received.

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Dollars and Sense

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In how many ways can you make change for a dollar using certain coins?

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Turning Red

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At what time will two traffic lights turn red together?

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