ArithmeticA

Practicing mental math usually feels like homework. ArithmeticA makes it feel like a puzzle. It’s a clean, fast number game where you clear a grid by adding and subtracting. The idea is straightforward: you see a grid of numbers and a target result. Pick the right numbers to match that target. But the way the game layers speed, accuracy, and daily puzzles keeps it from turning into a math drill. I’ve lost more than a few coffee breaks to it.

The developer, Eidosk, has a talent for brain-training games that don’t feel like chores. ArithmeticA is one of their most popular titles, and for good reason. The core loop is satisfying—tap a number, watch it vanish, see your score climb. Once you get comfortable with the operations, a rhythm develops. And because the puzzles change every day, there’s always a fresh reason to come back. This isn’t trying to be the next big action game. It’s a quiet, focused little game that respects your time.

How to Play

Your goal in ArithmeticA is to clear a grid of numbers by adding or subtracting. At the top of the screen, you’ll see a target number. Tap numbers on the grid that, when added or subtracted, equal that target. For example, if the target is 7, you might tap 3 and 4 (3+4=7) or 10 and 3 (10−3=7). Once you’ve selected the correct combination, those numbers disappear, new ones drop in, and a new target appears.

On desktop, click numbers with your mouse. On mobile or tablet, tap them with your finger. No dragging or swiping—just straightforward taps. The game works equally well on both platforms, and the interface scales nicely on smaller screens. You can play in landscape or portrait, though portrait feels more natural on a phone.

The game tracks your score based on how quickly and accurately you solve each puzzle. Classic mode has no strict time limit, but faster clears earn more points. If you tap numbers that don’t add up to the target, you lose a small amount of time or points, depending on the mode. The daily challenge does have a timer—you’re racing the clock to finish before time runs out.

Game Modes

ArithmeticA offers two main ways to play: Classic mode and Daily Challenge.

Classic mode is the endless version. You start with a small grid—usually 4x4 or 5x5—and work through a series of targets. As you clear numbers, the grid refills and difficulty gradually increases. Targets get trickier, numbers get larger. There’s no hard stop; you keep going until you make too many mistakes or decide to quit. Your high score is saved locally, so you can try to beat it next session.

Daily Challenge is where the game really shines. Every day, a new puzzle is generated with a fixed grid and a set of targets. You have a limited amount of time—usually a few minutes—to clear as much of the grid as possible. The twist: you can’t restart or redo the daily puzzle. Once you start, you’re committed. This gives each day a unique, one-shot feel. You can compare your score with friends if you’re both playing the same day’s puzzle, though the game doesn’t have a built-in leaderboard. It’s more about personal improvement.

There’s no separate “practice” mode, but Classic mode serves that purpose well. You can play at your own pace, experiment with strategies, and get comfortable with the mechanics before tackling the daily challenge.

Tips and Strategies

If you want to climb the scoreboard or just clear grids faster, a few tricks can make a big difference.

Start with the easy pairs. When a new target appears, scan the grid for obvious combinations. Pairs that sum to 10 (like 6 and 4, or 7 and 3) are common and quick to spot. Also look for numbers that are exactly half of the target—if the target is 12, a 6 and another 6 will do the job. Don’t overthink it; the fastest clears come from the simplest math.

Use subtraction to your advantage. Many players default to addition, but subtraction can open up combos that aren’t obvious. If the target is 8 and you see a 12 and a 4, that’s a valid subtraction (12−4=8). Sometimes the grid is full of large numbers, and subtraction is the only way to make progress. Train yourself to look for differences as well as sums.

Plan two moves ahead. After you clear a set of numbers, new ones drop in. Try to anticipate what the next target might be. You can’t predict it exactly, but you can leave the grid in a state where many combinations are possible. Avoid clearing numbers that are the only ones that can form a common sum. For example, if you have a single 5 and the target is 10, you might want to save that 5 for later in case you need it.

In the daily challenge, speed matters more than perfection. You have a limited time, so don’t agonize over every move. If you can’t find a combination within a few seconds, move on to another part of the grid or tap a different number to see if it works. Sometimes a wrong tap is faster than staring at the screen. You’ll lose a few points, but you’ll save precious seconds.

Practice mental math shortcuts. Knowing your addition and subtraction tables cold is a huge advantage. For instance, if the target is 17, you should instantly know that 9+8, 10+7, 11+6, 12+5, 13+4, 14+3, 15+2, 16+1, and 20−3 all work. The more combinations you can recognize without counting on your fingers, the faster you’ll play.

Common Mistakes

New players often fall into a few predictable traps. The most common one is tapping numbers without checking the target first. It sounds obvious, but when you’re in a hurry, it’s easy to tap a number that looks promising only to realize it doesn’t match anything. Always glance at the target before you start tapping.

Another mistake is ignoring subtraction entirely. Some players get into the habit of only adding, which can leave them stuck when the grid is full of numbers larger than the target. If you see a 15 and the target is 6, don’t give up—look for a 9 to subtract. Subtraction is your friend.

Trying to clear the whole grid in one go is also a common error. In Classic mode, the grid refills, so you don’t need to clear every single number. Focus on the ones that help you reach the target quickly. If you try to eliminate every number, you’ll waste time and miss easy combos.

Finally, neglecting the daily challenge is a missed opportunity. The daily puzzle is a great way to test your skills under pressure. Even if you don’t get a high score, the timed nature forces you to think faster. Over time, that speed will carry over to Classic mode.

FAQ

Is ArithmeticA free to play?
Yes, the game is completely free. There are no in-app purchases or ads that interrupt gameplay. You can play it directly in your browser on Poki.

Can I play on my phone?
Absolutely. The game works on desktop, mobile, and tablet. The controls are touch-friendly, and the layout adapts to smaller screens.

How do I get a high score?
Speed and accuracy are the two keys. Solve puzzles as quickly as possible without making mistakes. In Classic mode, you can keep playing indefinitely, so the longer you survive without errors, the higher your score will climb.

Is there a time limit?
Only in the Daily Challenge. Classic mode has no timer, so you can take as long as you want on each target. But remember, faster clears earn more points.

What happens when I clear the entire grid?
In Classic mode, the grid refills with new numbers. The game continues until you make a mistake or choose to stop. In the Daily Challenge, clearing the grid ends the puzzle early, and your score is calculated based on time remaining.

ArithmeticA is one of those rare puzzle games that makes you feel smarter the more you play. It’s not flashy, but it’s polished, responsive, and genuinely addictive. If you enjoy number puzzles or just want to sharpen your mental math without the pressure of a classroom, give it a try. You might find yourself coming back for the daily challenge every morning.