About the game
Arithmetic without limits — play online for free
Arithmetic Unlimited is the unlimited version of the mental math game. There is no need to wait for a new puzzle: finish one round and get new examples right away. Solve 10 examples against the clock and try not to make more than three mistakes.
The mode is great for practising before the puzzle of the day, warming up your brain or simply playing as much as you like. No registration or download needed — the game runs in your browser on a computer, tablet or phone.
Unlimited vs. puzzle of the day: what is the difference
| Feature | Unlimited | Puzzle of the day |
|---|---|---|
| Number of rounds | Unlimited | One per day |
| Examples | Random | The same for all players |
| Waiting | A new round right away | A new puzzle in 24 hours |
| Best for | Practice and long sessions | A daily habit |
Want a daily challenge? Try Arithmetic: puzzle of the day
How to play Arithmetic Unlimited
- 1Choose a mode: + −, + − × or + − × ÷.
- 2Solve the example in your head and enter the answer. You can make no more than 3 mistakes.
- 3Solve all 10 examples as quickly as you can — time is your result.
- 4Finished a round? Start a new one right away — no limit on rounds.
What the examples look like
47 + 38
91 − 56
Addition and subtraction
Basic mode: plus and minus only.
47 + 38
12 × 7
Plus multiplication
Multiplication is added to addition and subtraction.
12 × 7
84 ÷ 6
Plus division
The full set: all four arithmetic operations.
The examples are for illustration: in the game the numbers and operations are picked anew for every round.
Difficulty levels
| Mode | Operations | For whom |
|---|---|---|
| Easy | + − | For a quick warm-up and beginners |
| Classic | + − × | For those who know the multiplication table |
| Hard | + − × ÷ | For experienced players |
How to train and calculate faster
- Start with the "+ −" mode to get comfortable, then add multiplication and division.
- Round to tens: 47 + 38 is easier as 47 + 40 − 2.
- Learn the multiplication table — it speeds up both multiplication and division.
- After a round, recall which examples took the most time and practise those.
- Train in Unlimited, then test yourself in the puzzle of the day.
Why Arithmetic Unlimited is convenient
No limit on rounds
Play as many times in a row as you like, without waiting for the next day.
Three sets of operations
Choose from simple addition to the full set of four operations.
Free and no registration
Start playing right away: no account or app install needed.
Comfortable on any device
The responsive interface works equally well on phones and computers.
Frequently asked questions about Arithmetic Unlimited
How is Arithmetic Unlimited different from the puzzle of the day?
In the puzzle of the day there is one set of examples per day for all players. In Unlimited mode, examples are generated randomly, and after each round you can start a new one right away without waiting.
How many rounds can I play?
As many as you want. There is no daily limit.
How many mistakes can I make?
You can make no more than 3 mistakes. If there are more, the round is considered lost.
Can the same examples appear again?
Examples are generated randomly, so in rare cases the same example may appear again.
Do I need to register?
No. You can play for free and without registration right in your browser.