# Esti-Mystery Puzzle: How Many Dominoes in the Glass?

In this Esti-Mystery puzzle, you are challenged to figure out the number of dominoes in a glass through a series of clues. Narrow down the possibilities using estimation and logical deduction until you reach the final answer of 34 dominoes. Test your reasoning skills and enjoy this engaging mathematical challenge designed by Steve Wyborney.

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**Domino Dots**Steve Wyborney www.stevewyborney.com**How many dominoes**are in the glass? 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 between 20 and 50. Clue #2 Clue #2 The answer is an even number. Clue #3 Clue #3 The answer does not have a 4 in the tens place. Clue #4 Clue #4 The answer does have a 4 in the ones place. 1 11 11 1 11 21 31 41 41 41 41 41 1 11 21 21 21 1 11 21 31 31 31 31 1 2 12 12 2 12 22 32 42 42 42 42 42 2 12 22 32 32 32 32 2 12 22 22 22 2 3 13 23 33 43 43 43 43 43 3 13 23 33 33 33 33 3 13 13 3 13 23 23 23 3 4 14 24 34 44 44 44 44 44 4 14 24 24 24 4 14 14 4 14 24 34 34 34 34 4 5 15 15 5 15 25 35 35 35 35 5 15 25 25 25 5 15 25 35 45 45 45 45 45 5 6 16 16 6 16 26 36 36 36 36 6 16 26 36 46 46 46 46 46 6 16 26 26 26 6 7 17 27 27 27 7 17 17 7 17 27 37 47 47 47 47 47 7 17 27 37 37 37 37 7 8 18 28 38 48 48 48 48 48 8 18 18 8 18 28 28 28 8 18 28 38 38 38 38 8 9 19 29 29 29 9 19 29 39 39 39 39 9 19 19 9 19 29 39 49 49 49 49 49 9 10 10 20 30 40 40 40 40 10 20 30 30 30 10 20 30 40 50 50 50 50 50 10 20 20 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. 1 11 21 31 41 2 12 22 32 42 3 13 23 33 43 4 14 24 34 44 5 15 25 35 45 6 16 26 36 46 7 17 27 37 47 8 18 28 38 48 9 19 29 39 49 10 20 30 40 50 Steve Wyborney www.stevewyborney.com**The Reveal**34 dominoes Click to see the answer. Steve Wyborney www.stevewyborney.com**51 Esti-Mysteries**Click here to download more free Esti-Mysteries. C:\Users\Steve Wyborney\Desktop\Picture5.png The Esti-Mystery Creator Course This is the course I ve designed to teach you how to create your own Esti-Mysteries that are tailored for your class. More Free, Downloadable Resources From Blog Posts C:\Users\Steve Wyborney\Desktop\Maze Pic.jpg C:\Users\Steve Wyborney\Desktop\20 Days Title Pic.jpg C:\Users\Steve Wyborney\Desktop\Presentation1.jpg C:\Users\Steve Wyborney\Desktop\SPLAT blog post folder\Splat Promo Images and GIFs\Splat Level 3 B.jpg C:\Users\Steve Wyborney\Desktop\Splat Promos HUGE SET\Slide6.JPG C:\Users\Steve Wyborney\Desktop\8.8.2018 Desktop\Estimation Clipboard Desktop Materials\Bundle 1 Glasses Pic.jpg 20 Days of Number Sense Rich Math Talk 20 Days of Number Sense & Rich Math Talk The Original 50 Splat! Lessons The Maze Hundreds Chart The Original 20 Fraction Splat! Lessons The Original 80 Cube Conversations Lessons The Original 40 Estimation Clipboard Sets