A Hole In One
Without using a calculator or pen an paper estimate the value of the unknown to satisfy the conditions above. This is a trial and improvement exercises aided by any insights you have for the numbers involved.
Type in your estimate then click the 'swing' button. You will be shown the result of putting your estimate into the given expression. Continue to improve your estimate until the expression is in the given range.
Though you shouldn't use a calculator or pen and paper for this game you are encouraged to use your mental arithmetic skills to make an informed guestimate.
This is a nine hole golf course. When you have played all nine holes you will have the opportunity to claim a Transum Trophy showing your score. You are encouraged to play the game again to improve upon your personal best.
You can earn Transum Trophies for hundreds of mathematical activities, quizzes and games. Collect trophies in your own personal Transum Trophy cabinet and, for some activities, you can work on improving your personal best Transum scores.
"Estimation is the process of finding an estimate, or approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable. Typically, estimation involves "using the value of a statistic derived from a sample to estimate the value of a corresponding population parameter" - Wikipedia
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