Free printable math mystery worksheets
Browse 160+ free, printable math mystery worksheets by grade, math skill, or theme. Pick a category, print the case (and the answer key), and your child solves math to decode clues and catch the culprit. Every case is verified to have exactly one solution — or make a brand-new one on any theme.
By grade
Math scaled to the grade, mystery kept fun at every level.
By math skill
Target the exact skill your child is practicing.
By theme
The fastest way to win over a reluctant kid — a theme they already love.
Newest cases
Browse all →Hot off the press, free to print.
Worksheet FAQ
Are these math mystery worksheets free?
Yes. Every worksheet is free to solve online and free to download as a printable PDF — no account, no email, no paywall.
How are the worksheets organized?
Three ways: by grade (1–5), by math skill (addition, multiplication, rounding, and more), and by theme (space, sports, animals, pirates, and more). Pick any category to see matching printable cases.
What grades are they for?
Grades 1 through 5 (roughly ages 6–11). The mystery stays fun at every level while the math scales from within-20 addition to multiplication, division, and rounding.
What's included when I print one?
Each printable puts one clue per page with room to show work, a suspect grid to cross off, and a separate teacher/parent answer key.
Can I get a worksheet on a specific theme or skill?
Yes. Browse the theme and skill categories below, or generate a brand-new mystery themed to your child's exact interest in about a minute. Every generated puzzle is verified to have one solution.
Keep exploring
Math Mystery Games for a Kid Who Hates Worksheets
An honest guide to detective-style math for kids who groan at drills — what actually works, and when a mystery beats a game.
Detective Math: Story-Driven Practice for Ages 6–12
How whodunit math turns arithmetic into deduction — the method, the research-backed why, and how to start today for free.