Roomful Games › Bingo › Classic Number Bingo
Classic Number Bingo
Classic Number Bingo is the game everyone knows: 75 numbers from B-1 to O-75, with each column of the card taking its numbers from its own range, B 1 to 15 up to O 61 to 75. Print a different card for everyone, or play on the TV with phones, and share a fun fact about each number as it is called.
How to play
With printed cards
- Print as many cards as you need (up to 30) and the caller sheet. Every card is different.
- The caller reads the squares from the caller sheet, one at a time, and ticks each one. Read the fun fact too, if you like.
- Players mark a square when it is called. Coins, cereal, buttons or a crayon all work. The star in the middle is free.
- The first player to fill a whole row, column or diagonal shouts "Bingo!" The caller checks that line against the ticks on the caller sheet.
Ways to win
- Any line: a full row, column or diagonal. Quick games of about ten minutes.
- Four corners: the four corner squares.
- Blackout: every square on the card. Longer games, good for a big group.
With a TV and phones
- Open this set on a TV or laptop and pick how to win and how fast to call.
- Players go to roomfulbingo.com/join on their phones (or scan the QR code) and type the four-letter room code. Each phone gets its own card.
- The TV calls each square with its fun fact (it can read them aloud, too). Players tap a square to mark it.
- When a card has a winning line, its BINGO button lights up. The game checks it against the calls and shows the winner on the TV.
Printed cards and phones can play together: when someone shouts "Bingo!" on paper, the host types the card number and the TV checks it. It works the same way as Roomful Trivia: no app and no accounts.
All 75 squares, with fun facts
- B-1Earth has just 1 natural moon, and we simply call it the Moon.
- B-2A Bactrian camel has 2 humps on its back, where it stores fat.
- B-33 valves on a trumpet add extra lengths of tubing so the player can make lower notes.
- B-4About every 4 years, a leap year adds 1 extra day to the calendar.
- B-55 dwarf planets are officially recognized in our solar system so far, and Ceres is the closest one to the Sun.
- B-66 states make up New England, a region in the northeastern United States.
- B-7Earth has 7 continents, and Asia is the largest of them all.
- B-8A spider has 8 legs, which is one way to tell that it is not an insect.
- B-9The US Supreme Court has had 9 justices since a law set that number in 1869.
- B-1010 limbs help a giant squid catch its food: 8 arms plus 2 much longer feeding tentacles.
- B-11Apollo 11 was the mission that made the first human landing on the Moon, in July 1969.
- B-12On a piano, 7 white keys and 5 black keys together make a set of 12 different notes.
- B-1313 rules, typed up by James Naismith, laid out the very first game of basketball.
- B-1414 days make a fortnight, a word for 2 weeks that is used mostly in Britain.
- B-1515 is the score a tennis player gets for winning the first point of a game.
- I-16Abraham Lincoln was the 16th president of the United States, serving from 1861 to 1865.
- I-17Some cicadas spend 17 years underground as young insects, feeding on plant roots.
- I-1818 is the atomic number of argon, a gas named after the Greek word for lazy because it hardly reacts with anything.
- I-19Element number 19 is potassium, a soft, silvery metal that is essential to life.
- I-20An icosahedron is a solid shape with 20 matching triangle faces.
- I-21A chicken egg takes 21 days to hatch into a chick.
- I-22The human skull is made up of 22 separate bones.
- I-23Humans have 23 pairs of chromosomes, for a total of 46.
- I-24A day on Earth, from daytime through nighttime and back, lasts around 24 hours.
- I-2525 equals 3 times 3 plus 4 times 4, and 3, 4 and 5 are the smallest whole-number sides of a right triangle.
- I-2626 miles and 385 yards (about 42 km) is how far runners go in a marathon race.
- I-2727 amendments, or changes, have been added to the US Constitution so far.
- I-2828 letters make up the Arabic alphabet, which is written from right to left.
- I-2929 and a half days is how long the Moon takes to go through all of its phases.
- I-3030 is about how many times farther the planet Neptune is from the Sun than Earth is.
- N-3131 is the atomic number of gallium, a solid metal that quickly melts when you hold it.
- N-3232 chess pieces stand on the board when a game begins, 16 for each player.
- N-3333 small bones called vertebrae usually make up the human spine, and some of them join together.
- N-3434 is what every row, column and diagonal adds up to in a magic square artist Albrecht Durer made in 1514.
- N-3535 is the youngest age a person can be to become President of the United States.
- N-3636 is a square number, 6 times 6, and also a triangular number, since 1 through 8 added together make 36.
- N-3737 trillion is about how many cells scientists estimate make up a human body.
- N-3838 is the atomic number of strontium, which gives fireworks their bright crimson red color.
- N-3939 delegates signed the US Constitution, though 55 had attended the meetings that wrote it.
- N-4040 below zero reads exactly the same on Fahrenheit and Celsius thermometers.
- N-4141 is what you get when you add up the first six prime numbers: 2, 3, 5, 7, 11 and 13.
- N-4242 is how many permanent teeth a grown-up dog should have, while adult cats have 30.
- N-4343 miles an hour (69 km/h) is how fast an ostrich can sprint.
- N-4444 feet (about 13.4 meters) long and 20 feet (about 6.1 meters) wide is the size of a pickleball court.
- N-4545 is how many times per minute a small 7-inch (18 cm) vinyl record called a 45 spins.
- G-4646 is the atomic number of palladium, a gray-white metal named in honor of Pallas, an asteroid that had just been discovered.
- G-4747 strings stretch across a big concert grand harp, each a different size and length.
- G-4848 US states fit together in one unbroken block of land.
- G-4949 is Alaska's number, because it became the 49th US state in January 1959.
- G-5050 to 100 hairs falling out each day is perfectly normal for a person's head.
- G-5151 Pegasi b was the first planet ever found orbiting a star like our Sun.
- G-5252 years make up one Maya Calendar Round, and in Maya tradition, a person of 52 gains the special wisdom of an elder.
- G-5353 times a second is how fast a ruby-throated hummingbird can beat its wings.
- G-5454 is the number of recognized countries in Africa, the second largest continent.
- G-5555 miles per hour (89 km/h) is the top running speed of a pronghorn.
- G-5656 straight games with a hit was Joe DiMaggio's famous baseball hitting streak in 1941.
- G-57Element 57, lanthanum, is a silvery metal so soft it can be cut with a knife.
- G-5858 steps lead from the Lincoln Memorial's statue chamber down to the plaza level.
- G-5959 Earth days is how long it takes the planet Mercury to spin around just once.
- G-6060 minutes in an hour comes from the ancient Babylonians, who did their math in 60s.
- O-6161 home runs in 1961 gave Roger Maris a new single-season record, one more than Babe Ruth's 60.
- O-6262 miles (100 km) above Earth is the Karman line, which most scientists use as the edge of space.
- O-6363 points by Michael Jordan in 1986 is the most anyone has scored in an NBA playoff game.
- O-6464 different codons, each a set of 3 DNA letters, tell cells which building block to add to a protein or when to stop.
- O-6565 light-years away, bright Aldebaran is a cool red giant star that glows orange in the constellation Taurus.
- O-6666 is the number of Route 66, a famous 1926 highway that ran about 2,400 miles (3,900 km) to Los Angeles.
- O-6767,000 miles per hour (108,000 km/h) is about how fast Earth zooms around the Sun.
- O-68In 1968, the Apollo 8 astronauts became the first humans to orbit the Moon.
- O-69About 69 percent of the world's fresh water is stored in glaciers.
- O-7070 was Benjamin Franklin's age when he signed the Declaration of Independence, making him its oldest signer.
- O-71Element 71, lutetium, is named after Lutetia, the ancient Roman name for Paris.
- O-7272 French scientists and engineers have their names written in gold letters around the Eiffel Tower.
- O-73About 73 percent of your brain is water, and the same goes for your heart.
- O-7474 to 80 teeth fill an alligator's mouth at a time, and it can go through 3,000 in a lifetime.
- O-75More than 75 percent of Earth's flowering plants depend on pollinators like bees, butterflies, birds and bats.
Print the cards
Cards print two to a US Letter page, each with its own card number in the corner, plus a one-page caller sheet that lists the squares in a random calling order. Everything is made in your browser: nothing to sign up for, nothing sent anywhere.