Browse math mysteries
Every case is printable and verified to have one unique solution.
Grade 1
Grade 2
The Great Castle Crumble
Grade 2Place valueAdditionSubtractionSkip counting
The Golden Squeaker Caper
Grade 2Place valueAdditionSubtractionSkip counting
The Great Hat Town Caper
Grade 2AdditionSubtractionRoundingPlace value
The Kitty Cafe Mystery
Grade 2Place valueAdditionSubtractionSkip counting
The Great Toy Room Mix-Up
Grade 2AdditionSubtractionSkip countingPlace value
The Great Toy Factory Mix-Up
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Super Bad Superhero
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Super Bad Superhero
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Trail Sneak
Grade 2AdditionMultiplicationPlace valueSubtraction
Case of the Vine Snatcher
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Vine Bandit
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Yarn Bandit
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Jungle Map Snatcher
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Comet Crook
Grade 2Place valueAdditionSubtractionSkip counting
Case of the Cat Burglar
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Map Snatcher
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Missing Yellow Bolt
Grade 2AdditionSubtractionPlace valueMultiplication
The Case of the Sneaky Cat Burglar
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Missing Treasure Map
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Stolen Treasure Map
Grade 2Place valueAdditionSubtractionSkip counting
The Case of the Missing Treasure Map
Grade 2Place valueAdditionSubtractionSkip counting
Grade 3
The Mystery of the World Cup Trophy
Grade 3RoundingAdditionSubtractionMultiplication
The Junior World Cup Trophy Heist
Grade 3Place valueAdditionSubtractionMultiplication
The Case of the Ruined Rendezvous
Grade 3RoundingAdditionSubtractionMultiplication
The Great Starship Sabotage
Grade 3RoundingAdditionSubtractionMultiplication
The Phantom of Whispering Pines
Grade 3RoundingAdditionSubtractionMultiplication
The Sabotage of the Salty Sword
Grade 3RoundingAdditionSubtractionMultiplication
The Mystery of the Missing Golden Compass
Grade 3RoundingAdditionSubtractionMultiplication
The Mystery of the Starlight Bandit
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Star-Swiped Snacks
Grade 3RoundingAdditionSubtractionMultiplication
The Mystery of the Astro-Dome Bandit
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Bone Bandit
Grade 3RoundingAdditionSubtractionMultiplication
The Championship Soccer Caper
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Missing Golden Boot
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Missing Soccer Trophy
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Crumbling Goalposts
Grade 3RoundingAdditionSubtractionMultiplication
The Golden Cleat Caper
Grade 3RoundingAdditionSubtractionMultiplication
The Golden Cleat Mystery
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Star Port Pirate
Grade 3RoundingAdditionSubtractionMultiplication
Case of the Super Bad Superhero
Grade 3RoundingAdditionSubtractionMultiplication
Case of the Super Bad Superhero
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Golden Spatula
Grade 3RoundingAdditionSubtractionMultiplication
Case of the Comet Snatcher
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Pitch Prowler
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Vanished Cup
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Penalty Phantom
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Vanished Mascot
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Vanished Captain
Grade 3RoundingAdditionSubtractionMultiplication
Case of the Golden Cleat Bandit
Grade 3RoundingAdditionSubtractionMultiplication
The Case of the Goal Snatcher
Grade 3Place valueAdditionSubtractionMultiplication
The Case of the Missing Golden Cup
Grade 3Place valueAdditionSubtractionMultiplication
The Case of the Comet Crook
Grade 3Place valueAdditionSubtractionMultiplication
The Case of the Stolen Golden Boot
Grade 3Place valueAdditionSubtractionMultiplication
Grade 4
The Golden Cup Caper
Grade 4SubtractionMultiplicationRoundingSkip counting
The Championship Cup Caper
Grade 4Skip countingRoundingMultiplicationSubtraction
The Golden Trophy Mystery
Grade 4RoundingAdditionSubtractionMultiplication
The Great World Cup Trophy Heist
Grade 4RoundingAdditionSubtractionMultiplication
The World Cup Trophy Heist
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Frozen Trophy
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Missing Golden Hubcap
Grade 4RoundingAdditionSubtractionMultiplication
The Championship Cup Caper
Grade 4RoundingAdditionSubtractionMultiplication
The Great Trophy Heist of 2026
Grade 4MultiplicationSubtractionRoundingPlace value
Case of the Demolition Derby Bandit
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Smelly-Sock Bandit
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Stolen Dino Egg
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Snatched Egg Keeper
Grade 4RoundingAdditionSubtractionMultiplication
Case of the Comet Crook
Grade 4RoundingAdditionSubtractionMultiplication
Case of the Cretaceous Crook
Grade 4RoundingAdditionSubtractionMultiplication
Case of the Comet Thief
Grade 4RoundingAdditionSubtractionMultiplication
Case of the Comet Thief
Grade 4RoundingAdditionSubtractionMultiplication
Case of the Missing Egg Keeper
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Comet Crook
Grade 4RoundingAdditionSubtractionMultiplication
The Case of the Missing Dino Egg
Grade 4RoundingAdditionSubtractionMultiplication