Family Math #7
Wacky Math
Tracey writes the following equation on the board
76 = 24
It's obviously incorrect.
Correct this equation so that it makes sense, by moving the four digits around. You must use each of the numbers, and you can only use each one once. You also can't introduce any new signs -- plus sign, minus, division, so on. You only have the equals sign. Imagine that the four digits are written on four slips of paper to help you solve this challenge.
The Questions:
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1. How can you make the equation true?
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We can make then into a fraction and equalize the numerators.
6/7 = x/42 which is solved to be 6/7 = 36/42
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2. Which family member did you work with? Is there a reason why you chose that family member?
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My mom since she was home and willing.
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3. How did you go about solving the problem? In other words, what did you try first? What did you try next? Did you use coins to help you? Who offered suggestions? (This should be at least three sentences long and include your process)
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First we tried to solve it with the numbers. Then we wrote the numbers on a piece of paper, and moved them around a lot. Then we got a calculator and we tried solving it by fractions, until we realized that we need to add a numerator to the equation to solve it.
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4. Did you try anything that didn’t work? If so, what was it (be specific)
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Yes we tried many numbers until we came up with this solution.
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5. What did you enjoy most about this process and what did you find to be the most challenging or frustrating (be specific).
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It was fun to think we found the answer.
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