Puzzle: Guess The Operation
Everyone, please stay safe, sane, and most importantly, healthy. We are in unprecedented times. My blessings to all of you, always.
Blog entries will continue to be published every Saturday and Sunday, and most Fridays, through the end of April. I will be working on content for May soon.
Here's a game that you can play with students or to sharpen your wits. I will let you figure out the solution and how you tackle these puzzles is up to you.
Each of the blanks, ____, needs an arithmetic operation:
+ add
- subtract
× multiply
÷ divide
Have fun!
Easy Level
Example: 82 ____ 24 = 1968
Fill in the box by either +, -, ×, or ÷.
Answer: 82 × 24 = 1968
Try these puzzles:
12 ____ 38 = 50 1334 ____ 58 = 23
425 ____ 25 = 17 27 ____ 15 = 405
68 ____ 46 = 22 631 ____ 399 = 1030
108 ____ 34 = 142 1200 ____ 750 = 450
Medium Level
Example: 49 ____ 58 ____ 20 = 87
Answer: 49 + 58 - 20 = 87
Hint:
The answer for the first box is either: +, -, ×, ÷
The answer for the second box is either: +, -
Try these puzzles:
45 ____ 52 ____ 36 = 133 51 ____ 16 ____ 36 = 852
208 ____ 34 ____ 102 = 72 18 ____ 24 ____ 58 = 100
5 ____ 8 ____ 6 = 46 500 ____ 100 ____ 300 = 305
11 ____ 3 ____ 9 = 24 764 ____ 195 ____ 420 = 989
52 ____ 49 ____ 68 = 71 44 ____ 28 ____ 250 = 982
399 ____ 3 ____ 15 = 148 582 ____ 6 ____ 50 = 47
Harder Level
Good luck and happy solving.
Hint: In this level, the choice of operations are +, -, ×
61 ____ 49 ____ 36 ____ 50 = 24
58 ____ 76 ____ 34 ____ 53 = 4495
99 ____ 39 ____ 49 ____ 59 = 50
88 ____ 76 ____ 46 ____ 50 = 6684
63 ____ 26 ____ 100 ____ 305 = 1433
402 ____ 118 ____ 386 ____ 453 = 217
153 ____ 38 ____ 500 ____ 205 = 5109
Eddie
All original content copyright, © 2011-2020. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.
Everyone, please stay safe, sane, and most importantly, healthy. We are in unprecedented times. My blessings to all of you, always.
Blog entries will continue to be published every Saturday and Sunday, and most Fridays, through the end of April. I will be working on content for May soon.
Here's a game that you can play with students or to sharpen your wits. I will let you figure out the solution and how you tackle these puzzles is up to you.
Each of the blanks, ____, needs an arithmetic operation:
+ add
- subtract
× multiply
÷ divide
Have fun!
Easy Level
Example: 82 ____ 24 = 1968
Fill in the box by either +, -, ×, or ÷.
Answer: 82 × 24 = 1968
Try these puzzles:
12 ____ 38 = 50 1334 ____ 58 = 23
425 ____ 25 = 17 27 ____ 15 = 405
68 ____ 46 = 22 631 ____ 399 = 1030
108 ____ 34 = 142 1200 ____ 750 = 450
Medium Level
Example: 49 ____ 58 ____ 20 = 87
Answer: 49 + 58 - 20 = 87
Hint:
The answer for the first box is either: +, -, ×, ÷
The answer for the second box is either: +, -
Try these puzzles:
45 ____ 52 ____ 36 = 133 51 ____ 16 ____ 36 = 852
208 ____ 34 ____ 102 = 72 18 ____ 24 ____ 58 = 100
5 ____ 8 ____ 6 = 46 500 ____ 100 ____ 300 = 305
11 ____ 3 ____ 9 = 24 764 ____ 195 ____ 420 = 989
52 ____ 49 ____ 68 = 71 44 ____ 28 ____ 250 = 982
399 ____ 3 ____ 15 = 148 582 ____ 6 ____ 50 = 47
Harder Level
Good luck and happy solving.
Hint: In this level, the choice of operations are +, -, ×
61 ____ 49 ____ 36 ____ 50 = 24
58 ____ 76 ____ 34 ____ 53 = 4495
99 ____ 39 ____ 49 ____ 59 = 50
88 ____ 76 ____ 46 ____ 50 = 6684
63 ____ 26 ____ 100 ____ 305 = 1433
402 ____ 118 ____ 386 ____ 453 = 217
153 ____ 38 ____ 500 ____ 205 = 5109
Eddie
All original content copyright, © 2011-2020. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.