A math game for the number-theory unit. Cards are filled with real primes — 2, 3, 5, 7, 11 — and players mark each one as you call it or pose a clue that points to it.
Free to design and print · edit any square · 3×3, 4×4, or 5×5
Prime-number bingo gives students repeated, playful practice telling primes from composites. Call a prime outright, or read a clue like "the only even prime," and the class scans the grid for the match, sharpening the recall they need for factoring later on.
Because every card is shuffled from the same square list, no two students get the same grid, so the whole class can play together while each player hunts for their own numbers and the round stays fair.
These are just a starting point — swap in your own words in the editor before you print.
Call clues, not just numbers
Read hints like "the prime between 10 and 12" so students reason their way to the answer instead of just matching a number you read aloud.
Mix in a few composites
Add numbers like 9 or 15 as call-only traps that never appear on a winning line, so students have to decide whether each one is prime before marking.
Print a class set or play live
Print a card for every desk, or share one link and a QR code so a tablet cart or a remote class can all play the same round together.
Edit every square. Open the card in the editor, keep the suggested squares or replace them with your own words, emoji, or photos, and pick a theme that fits the day.
Print a whole set at once. Each card is shuffled from the same square list, so every player gets a unique grid. Print to standard letter or A4 paper on any home printer — or order professionally printed cards shipped to your door.
Or play live. Share one link and a QR code and the whole room plays from their phones, in person or over video.
How do I make prime-number bingo for free?
Open the editor, pick the schoolhouse theme, keep the suggested primes or type your own range, and print. You can design and print a basic set without paying.
Which primes should I put on the cards?
Match the range your class is studying — small primes under 50 for beginners, or larger ones up to 100 for a challenge — and the squares update to fit.
Can I use this for composite review too?
Yes. Mix in composite numbers as call-only items that students must reject, turning the game into practice telling primes and composites apart.
How many cards do I need?
One per student. Each card is randomly shuffled from the same number list, so a class of any size can play and still get unique grids.