Esti-Mystery: The Return of the Erasers!
Discover the total number of erasers through a series of clues and estimation. Clues narrow down possibilities - multiple of 7, odd number, exclude 4, and includes digit 7. With strategic estimation, arrive at a final guess before the reveal - 91 erasers!
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The Return of the Erasers! Important Note: If you can see this box, then the slide show is not playing and the reveal won t work. Here is the solution: If you are using PowerPoint, click on Slide Show, then click on From Current Slide. If you are using Google Slides, click on View then Present. Steve Wyborney www.stevewyborney.com
What is the total number of erasers? As the clues appear, use the information to narrow the possibilities to a smaller set. After each clue, use estimation again to determine which of the remaining answers is the most reasonable. Write down your first estimate. After each clue, you ll see if your estimate is still a possibility. After each clue, if it is no longer possible write down a new estimate and be prepared to explain why you chose it. Steve Wyborney www.stevewyborney.com
Clue #1 Clue #1 The answer is less than 100 and is a multiple of 7. Clue #2 Clue #2 digit 7. The answer does not include the Clue #3 Clue #3 digit 4. The answer does not include the Clue #4 Clue #4 The answer is an odd number. Steve Wyborney www.stevewyborney.com
After seeing the clues, you have narrowed the possibilities to a small set of numbers. Before you see the answer, select your final estimate. Write it down, and explain to someone why you chose that number. Steve Wyborney www.stevewyborney.com
The Reveal 91 erasers Click to see the answer. Important Note: If you can see this box, then the slide show is not playing and the reveal won t work. Here is the solution: If you are using PowerPoint, click on Slide Show, then click on From Beginning. If you are using Google Slides, click on View then Present. Steve Wyborney www.stevewyborney.com
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