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Mystery Number
What is the mystery number? If I subtract 1 / 2 of it, then multiply by 3, and then add 2, the end result is 26.
(Source: from Mathematics Teaching in the Middle School, Jan-Mar1995)
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Extensions |
| Write your own mystery number problem to have a classmate or friend solve. Make sure that your number goes through three transformations (addition, subtraction, multiplication or division). |
 Submit your idea for an investigation to InterMath.
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