Sign-In
Cart
3-Sum: A New Game of Simple Math Puzzles For Hours of Brain Teasing Fun (Vol. 1)
Paperback
Series: 3-Sum, Book 1
Currently unavailable to order
Please enter your email and a message will be sent to you when this product becomes available on our website.
ISBN13: 9781673419306
Publisher: Independently Published
Published: Dec 9 2019
Pages: 116
Weight: 0.36
Height: 0.24 Width: 6.00 Depth: 9.00
Language: English
3-Sum is a math numerical placement puzzle, conceptualized and designed by a daughter to keep her elderly mom's brain sharp.
Young or old, if you can add three numbers then you can play this game. But, don't let the simplicity of the math fool you! While some puzzles are easy, others will definitely provide your brain a fun challenge.
There are four levels of math puzzle difficulty: Novice, Advanced, Expert and Master.
The object of the game is to fill a 3 × 3 grid with digits from 1 to 9 such that:
- adding the three digits in each row will equal the provided sum for that row;
- adding the three digits in each column will equal the provided sum for that column;
- adding the three digits on the diagonal starting from the top left cell and ending with the bottom right cell will equal the provided sum for that diagonal.
The puzzles can be completed by one person, or can be used by multiple players - family and friends - for hours of recreational and educational fun.
100 puzzles with solutions included
1 different editions
Also available
Also in
Logic & Brain Teasers
The Ministry of Quizzes: The Ultimate Compendium for Puzzlers and Quiz Solvers
Gentle, David
Paperback
Big Quiz Book 2: 1001 Brain Busting Trivia Questions (National Geographic Kids)
National Geographic Kids
Paperback
The Official Sherlock Puzzle Book: Are You as Smart as Sherlock Holmes? (Sherlock Holmes Puzzle, Detective Gifts, Mystery Gifts)
Maslanka, Chris
Tribe, Steve
Paperback
Murdle: Volume 1: 100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction
Karber, G. T.
Paperback
Murdle: Volume 2: 100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction
Karber, G. T.
Paperback
Puzzle Mania!: Wordle, Connections, Spelling Bee, Minis and More!
New York Times Games, The
Fagliano, Joel
Hardcover
Murdle: Volume 3: 100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction
Karber, G. T.
Paperback
The Ultimate Brain Health Puzzle Book for Adults: Crosswords, Sudoku, Cryptograms, Word Searches, and More!
Fraas, Phil
Paperback
Minute Cryptic: Over 160 Wordplay Puzzles to Decipher, Unlock, and Untangle
Tiernan, Angas
Runnalls, Liam
Paperback
Garden Lover's Puzzle Book: Packed with Quizzes, Puzzles, and Trivia for Garden Enthusiasts
Books, Michael O'Mara
Paperback
The Ultimate Fun Adult Activity Book: Logic Puzzles, Sudoku, Mazes, Word Searches, Crosswords, Acrostics, Coloring, and More!
Demyanovich, Julie
Paperback
The Killer Isn't Alice: The Bestselling Murder Mystery Puzzle Book - 46,600 Suspects, 1 Killer. Can You Solve the Crime?
Starling, Iris
Paperback
Brain Games - Large Print Bible Word Search: Psalms (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Brain Games - Criminal Mind Puzzles: Crime-Themed Brain Teasers Visual, Verbal, Memory & Logic Puzzles Spiral Bound Activity Book for Adults & Teens
Brain Games
Publications International Ltd
Paperback
Puzzles & Perils: The Crystal Quest: A Novel in 100 Fantastical Puzzles
Ayres, Laura Jayne
Moore, Gareth
Paperback
Would You Rather - Campfire Edition: 300+ Wild and Funny Questions for Camping Nights and Outdoor Adventures
Special Art
Paperback
Relaxing Brain Games for Adults: 100+ Logic, Math, and Word Puzzles to Help You Unwind
Callisto Publishing
Paperback
Brain Games - Word Searches - Large Print: Easy on the Eyes, Not on the Brain Puzzles Progress from Simple to Challenging Gift for Adults & Seniors (Large Print Edition)
Brain Games
Publications International Ltd
Paperback
Brain Games - Large Print Word Search: Unwind and Test Your Problem-Solving Skills Easy to Read, Fun to Solve Gift for Adults & Seniors (Large Print Edition)
Brain Games
Publications International Ltd
Paperback
Bordergrams: A Quest for the Queen: 80 Epic Fantasy Connection Puzzles from the Bestselling Author of Murdle
Messerschmidt, Dani
Karber, G. T.
Donohue, Daniel
Paperback
Brain Games - Merriam-Webster's Variety Puzzles Large Print: Anagrams, Crosswords, Cryptograms, Word Searches, and More!
Publications International Ltd
Brain Games
Paperback
Brain Games - Sticker by Number: Flowers & Nature Stained Glass (28 Images to Sticker)
Brain Games
New Seasons
Publications International Ltd
Paperback
399 Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young
Linde, Nancy
Paperback
The Official Agatha Christie Puzzle Book: Put Your Detective Skills to the Ultimate Test
Agatha Christie Ltd, Agatha Christie
Paperback
Meowdle: 75 Feline Crime Puzzles to Solve Using Logic, Skill and the Power of Catnip
Ayres, Laura Jayne
Moore, Gareth
Paperback
500 Puzzles for Wordle Lovers: Sharpen Your Skills with Fun, Challenging Brain Teasers!
Carlile, Rick
Paperback
Brain Games - Relax and Solve: Word Search Puzzles (Pattern Cover)
Publications International Ltd
Brain Games
Paperback
Brain Games - Calm: Word Search Puzzles - Large Print
Publications International Ltd
Brain Games
Paperback
200 Stress-Relieving Sudoku Puzzles to Sharpen Your Mind: Presented by Maria Shriver, Patrick Schwarzenegger, and Mosh
Shriver, Maria
Schwarzenegger, Patrick
Mosh
Hardcover
299 On-The-Go Games & Puzzles to Keep Your Brain Young: Minutes a Day to Mental Fitness
Linde, Nancy
Paperback
Brain Games - Bible Word Search (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Brain Games - Relax and Solve: Sudoku (Pattern Cover)
Brain Games
Publications International Ltd
Paperback
Murder Most Puzzling Peril at Quandary Park: A Mysterious Case to Solve
Von Reiswitz, Stephanie
Hardcover
Brain Games - Relax and Solve: Crossword Puzzles (Pattern Cover)
Publications International Ltd
Brain Games
Paperback
New York Times Crossword Puzzle 2025: Crossword Puzzle Book for Adults, Seniors, Men And Women With Full Solutions
Morris, Jerry R.
Paperback
Brain Games - Large Print Word Search (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Brain Games - Large Print Sudoku: Unwind and Test Your Problem-Solving Skills Easy to Read, Fun to Solve Gift for Adults & Seniors (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
100 Stress-Relieving Word Search Puzzles to Sharpen Your Mind: Presented by Maria Shriver, Patrick Schwarzenegger, and Mosh
Schwarzenegger, Patrick
Mosh
Shriver, Maria
Hardcover
Brain Games - To Go - Sudoku Puzzles: More Than 200 Sudoku Puzzles! (Purple)
Publications International Ltd
Brain Games
Paperback
440 Games, Puzzles & Brain Boosters Specially Designed to Keep Your Mind Sharp
Linde, Nancy
Paperback
Purrdle: 75 More Feline Crime Puzzles to Solve Using Logic, Skill & the Power of Catnaps
Moore, Gareth
Ayres, Laura Jayne
Paperback
50 Math Tricks That Will Change Your Life: Mentally Solve the Impossible in Seconds
Zakowich, Tanya
Paperback
The Total Brain Workout: 450 Puzzles to Sharpen Your Mind, Improve Your Memory & Keep Your Brain Fit
Danesi, Marcel
Paperback
Brain Games - To Go - Forensic Puzzles: Investigate Crime Puzzles - Match DNA and Fingerprints - Decode Clues - Figure Out Who Done It
Brain Games
Publications International Ltd
Paperback
Would You Rather Book For Kids - 300+ Hilarious, Silly, and Challenging Questions To Make You Laugh
Ellis, Stephen J.
Paperback
Brain Games - USA Word Search Puzzles (#5): Volume 5
Publications International Ltd
Brain Games
Paperback
Brain Games - To Go - Stress Free: Sudoku Puzzles
Brain Games
Publications International Ltd
Paperback
Adult Activity Book: An Adult Activity Book Featuring Coloring, Sudoku, Word Search And Dot-To-Dot
Adult Activity Book
Paperback
Tricky Logic Puzzles for Adults: 130+ Difficult Puzzles to Challenge Your Brain
Clontz, Steven
Paperback
Word Search For Adults: Large Print Word Search Puzzles For Seniors, Adults and Teens. Themed Word Find Adult Activity Book
Puzzleplay Press
Paperback
Brain Games - Large Print Sudoku Puzzles (Swoosh)
Publications International Ltd
Brain Games
Paperback
Woofdle: 75 Canine Crime Puzzles to Solve Using Logic, Skill & the Power of Walkies
Moore, Gareth
Ayres, Laura Jayne
Paperback
Healthy Brain Origami: Fold Decorative Paper Models That Boost Mental Acumen and Keep Your Brain Active! (Craft a Happier, Healthier Brain!)
Yokoi, Katsushi
Ohara, Mayumi
Paperback
Sherlock Holmes Escape Book: The Adventure of the London Waterworks: Solve the Puzzles to Escape the Pages
Sacker, Ormond
Paperback
Brain Games - Unusual Knowledge Word Search Puzzles: With Trivia & Facts Science, History & Pop Culture Spiral Bound Activity Book Gift for Adults, Se
Publications International Ltd
Brain Games
Paperback
Brain Games - Sherlock Holmes Puzzles (#1): Over 100 Cerebral Challenges Inspired by the World's Greatest Detective! Volume 1
Publications International Ltd
Brain Games
Paperback
Brain Games - Word Searches - Large Print (Purple) (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
More Large Print Logic Puzzles: 50 Logic Grid Puzzles: Contains fun puzzles in font size 16pt (Large Print Edition)
High, Suzanne
Paperback
Brain Games - 2 Books in 1 - Sudoku (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
100 Stress-Relieving Crossword Puzzles to Sharpen Your Mind: Presented by Maria Shriver, Patrick Schwarzenegger, and Mosh (Revised and Updated)
Schwarzenegger, Patrick
Mosh
Shriver, Maria
Paperback
Brain Games - Sudoku Large Print (Red) (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Brain Games - Crosswords Large Print (Green) (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Killer Puzzles: Crosswords, Cyphers, Cryptograms, and More for the True Crime Obsessed
Thorne, Archer
Paperback
417 More Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young
Linde, Nancy
Paperback
Brain Games - Codeword Puzzle: Unscramble the Alphabet, Fill in the Grid, and Solve the Puzzle!
Publications International Ltd
Brain Games
Paperback
The Language Lover's Puzzle Book: A World Tour of Languages and Alphabets in 100 Amazing Puzzles
Bellos, Alex
Paperback
The New York Times Will Shortz Presents Kenken: 300 Easy to Hard Puzzles That Make You Smarter
New York Times
Miyamoto, Tetsuya
Kenken Puzzle LLC
Paperback
100 Stress-Relieving Word Search Puzzles to Sharpen Your Mind: Presented by Maria Shriver, Patrick Schwarzenegger, and Mosh
Schwarzenegger, Patrick
Mosh
Shriver, Maria
Paperback
Brain Games - Large Print Outsmart Dementia Puzzles: Prevent Alzheimer's Disease and Maintain Cognitive Health
Publications International Ltd
Brain Games
Paperback
The Little Book of Big Brain Games: 517 Ways to Stretch, Strengthen and Grow Your Brain
Moscovich, Ivan
Paperback
Brain Games - Crime Scene Investigation (Csi) Puzzles
Publications International Ltd
Brain Games
Paperback
Suguru Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Khomiak, Dmytro
Veider, Dart
Paperback
200 Stress-Relieving Sudoku Puzzles to Sharpen Your Mind: Presented by Maria Shriver, Patrick Schwarzenegger, and Mosh
Schwarzenegger, Patrick
Mosh
Shriver, Maria
Paperback
Brain Games - Large Print Crosswords: Unwind and Test Your Problem-Solving Skills Easy to Read, Fun to Solve Gift for Adults & Seniors (Large Print Edition)
Publications International Ltd
Brain Games
Paperback
Brain Games - Useless Information Word Search: Find Hundreds of Weird Facts and Forgotten Intelligence
Brain Games
Publications International Ltd
Paperback
Brain Games - Miracles of Jesus Word Search Puzzles
Brain Games
Publications International Ltd
Paperback
Would You Rather Book for Kids Ages 7-13: 220+ Hilarious Questions and Challenging Choices the Entire Family Will Love (Funny Jokes and Activities for
Rangubtook, Boonlerd
Pinthong, Bancha
Paperback
The Adult Activity Book: Sudoku, Kakuro, Scramble, Hex, Code Cracker, Cryptogram, Thorax, and Many Others
Robert D Brewer
Paperback
Keep Your Brain Alive: 83 Neurobic Exercises to Help Prevent Memory Loss and Increase Mental Fitness
Rubin, Manning
Katz, Lawrence
Paperback
The Undercover Agent Puzzle Book: Test Your Crime-Solving Skills in 8 Escape Room Scenarios
Moore, Gareth
Paperback
Cryptograms Puzzle Books for Adults: Cryptoquote books, Inspirational and Motivational, Cryptoquote Puzzle Books for adults (Cryptic Puzzles) (Large Print Edition)
Bottlerz, Happy
Reguigui, Khadidja
Paperback
Brain Games - Puzzles for Mom: More Than 170 Puzzles to Brighten Mom's Day
Publications International Ltd
Brain Games
Paperback
Large Print Logic Puzzles: 50 Logic Grid Puzzles: Contains fun puzzles in font size 16pt
High, Suzanne
Paperback
Brain Games - Large Print Crossword Puzzles (Arrow)
Brain Games
Publications International Ltd
Paperback
The Ultimate Brain Health Logic Puzzle Book for Adults: Sudoku, Calcudoku, Logic Grids, Cryptic Puzzles, and More!
Danesi, Marcel
Paperback
Brain Games - Ultimate Brain Challenge: More Than 150 Puzzles to Test Your Knowledge
Publications International Ltd
Brain Games
Paperback