90 Square Logic Puzzles
In this collection of 90 Square Puzzles, your challenge is to add additional digits to some of the cells so that the sum of numbers in each row and column equals 90.
Instructions
Each 90 Square puzzle consists of a 3×3 or 4×4 square grid with numbers appearing in each square.
Add one additional digit to some of the cells so that the sum of numbers in each row and column of the square equals 90.
In the above example, the original top row of the square was 2, 6, 6 which sums to 10. If you look at the puzzle solution, you can see that 2 needs to be changed to a 24 and the first 6 needs to be changed to a 60. Now 24 + 60 + 6 = 90.
It’s quite easy to make any single row or column sum to ninety. The challenge is to make EVERY single row and column sum to 90.
Printing Options
This set of 90 Square Puzzles features sixty different puzzles that are arranged 6 to a page. You can print a single page of puzzles to solve or the entire packet of puzzles.
There are 5 pages of 3×3 puzzles and 5 pages of 4×4 puzzles
90 Square Puzzle Files
These 90 Square Logic Puzzles are available both as a PDF and as an editable PPT file.
Click here to SAVE the file to your device.
90 Square Puzzles (PDF)
4 saves – 67.55 KB
PowerPoint
Click here to SAVE the file to your device.
90 Square Puzzles (PPT in ZIP)
2 saves – 227.82 KB
Puzzle Solutions
Puzzle solutions are available on a password-protected solution page. I do not openly post the puzzle answer keys because one of my goals as a resource creator is to craft learning experiences for students that are non-google-able. I want teachers to be able to use these puzzles in their classrooms without the solutions being found easily on the Internet.
Please email me at sarah@mathequalslove.net for the password to the answer key database featuring all of my printable puzzles and math worksheets. I frequently have students emailing me for the answer key, so please specify in your email what school you teach at and what subjects you teach. If you do not provide these details, I will not be able to send you the password.
Not a teacher? Go ahead and send me an email as well. Just let me know what you are using the puzzles for. I am continually in awe of how many people are using these puzzles with scouting groups, with senior adults battling dementia, or as fun activities in their workplace. Just give me enough details so I know you are not a student looking for answers to the puzzle that was assigned as their homework!
