Six numbers, four operations, one target. Combine them until you hit it.
Endless
Puzzles keep coming and get harder as you go. Every exact hit adds to your streak.
Rush
Solve as many as you can before time runs out. Skipping one costs 10 seconds.
Leaderboard
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- —1
- —3
Today's fastest daily solvers. Streaks, endless and rush boards inside.
Shop
Every daily round earns coins. Spend them on a new desk or calculator, or buy coins to support the game.
Invite friends
Share Sixtally with friends.
A daily number puzzle
Sixtally is a free math puzzle game you play in your browser, with no download or sign-up. Each puzzle gives you six numbers and a target. Combine the numbers with addition, subtraction, multiplication and division to hit the target exactly.
How to play
- Pick a number, then an operation (+ − × ÷), then another number. The two become one new number.
- Keep combining, up to five steps. You don't have to use all six numbers.
- Hit the target exactly for three stars. Finish within 5 for two stars, or within 15 for one.
Questions
Is there a new puzzle every day?
Yes. The daily challenge has three rounds, easy, medium and hard, and everyone in the world gets the same puzzle. A new one arrives at midnight. Play every day to grow your day streak.
What if I want more than one puzzle a day?
Play Endless, where the puzzles keep coming and get harder as your streak grows, or Rush, where you solve as many as you can in one, two or three minutes.
Is Sixtally free?
Yes, every mode is free. Daily rounds earn coins you can spend on new desks, calculators, paper tapes and effects in the shop. Buying coins is optional and also turns off ads.
Do I need an account?
No. Your progress saves on your device. Make a free account, with just a name or with Google, to join the leaderboard and keep your streak on every device.
Is it good for practising mental math?
Yes. Every puzzle has a solution, and finding it takes quick arithmetic and a bit of planning, which makes it a good daily brain-training habit for kids and adults.