Integer Function

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Find the smallest integer for which an expression results in an integer.

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Seven Envy

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Use the same whole number and the operations +, -, x, and ÷ to produce a certain number.

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Squares inside Squares

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Find the four-digit number that fits the description.

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Impossible Scores

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What is the highest score below 100 that is impossible to score on a given dart board?

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Five Alive

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If you wrote a list of consecutive whole numbers, how many times would you write the digit 5?

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Multiple Digits

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Betty wrote a list of consecutive whole numbers starting with the number 1. If you know how many digits she used, can you determine the last number Betty wrote?

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Aging Adults

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If you know the product of two adults’ ages, can you determine the age of the younger adult?

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Know Your ABC’s

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Determine the product of abc under certain restrictions.

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Sharing Cookies

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In how many ways could Moe, Larry, and Curly share eight cookies?

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Even Factors

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Examine numbers whose factors are all even, except for the number 1.

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