About Math Puzzles
Math Puzzles is a pair of free mental math games built to make numbers feel like a sport. In Sprint, you have 60 seconds to answer as many arithmetic problems as you can, from quick sums to multi-step problems. In Equations, you solve ten “fill the blank” puzzles such as 7 _ 3 = 21 or (4 + _) × 3 = 27, where you work out the missing number or operator.
Both modes adapt to you. Sprint starts with small additions and subtractions, then moves up through times tables, division, order of operations, squares and percentages as you get answers right, and steps back down when you slip. Equations gets harder every round, so the final puzzles really make you think. They're math puzzles for adults who want a quick workout, and a friendly challenge for kids practicing their facts.
Everything runs in your browser with a big, tactile keypad for phones and full keyboard support on computers. Your best score for each mode is saved and ranked on the global leaderboard.
How to play Math Puzzles
- 1
Pick a mode
Choose Sprint for a 60-second speed round or Equations for ten brain-teasing puzzles. Press Start and a 3-2-1 countdown gets you ready.
- 2
Sprint: type and go
Type the answer with your keyboard or the on-screen keypad. As soon as you've entered as many digits as the answer needs, it's checked automatically — correct answers load the next problem instantly, while a wrong answer shows the right one before moving on.
- 3
Climb the levels
There are ten Sprint levels. A few correct answers in a row (fast answers count double) move you up a level, and a miss moves you down one. Higher levels are worth more points per answer.
- 4
Equations: find the blank
Each puzzle hides one piece of an equation. If it's a number, type it and press Enter. If it's an operator, tap + − × ÷ or press the matching key. Every puzzle has exactly one correct answer.
- 5
Beat the clock
Equations gives you 20 to 30 seconds per puzzle depending on the round. The time you have left becomes bonus points, so a fast answer can be worth more than the puzzle itself.
Controls
| Input | Action |
|---|---|
| 0–9 | Type an answer (keyboard or on-screen keypad) |
| Backspace | Delete the last digit |
| Enter / ✓ | Submit your answer |
| + − x / | Pick an operator in Equations (or tap the buttons) |
| P or Esc | Pause the timer |
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Math Puzzles tips and strategy
Make friendly numbers
Round to the nearest ten, then adjust. 47 + 38 is 47 + 40 − 2 = 85. Subtraction works the same way: 83 − 29 is 83 − 30 + 1 = 54.
Split big multiplications
Break one number into parts: 16 × 7 = 10 × 7 + 6 × 7 = 70 + 42 = 112. This is the fastest way through two-digit times one-digit problems.
Use shortcuts for 5, 9 and 11
To multiply by 5, multiply by 10 and halve (5 × 18 = 180 ÷ 2 = 90). To multiply by 9, multiply by 10 and subtract once (9 × 7 = 70 − 7 = 63). For a two-digit number times 11, add the digits and put the total in the middle: 11 × 24 = 264.
Remember the order of operations
Multiplication and division come before addition and subtraction, unless parentheses say otherwise. So 2 + 3 × 4 is 14, not 20. Many Equations puzzles depend on this.
Work backward in Equations
Undo the operations one at a time. For _ × 4 − 5 = 23, add 5 to get 28, then divide by 4 to get 7. For a missing operator, try the one that changes the numbers the most first: if the result is much bigger than both numbers, it's probably ×.
Percentages start at 10%
Find 10% by moving the decimal point one place, then scale: 25% is a quarter, 75% is three quarters, and 20% is double 10%. So 20% of 70 is 14.
Chase the +2 seconds
In Sprint, every fifth correct answer in a row adds two seconds. Accuracy keeps the bonus coming, so don't rush into a mistake to save a fraction of a second.
How scoring works
Sprint: each correct answer is worth 10 points per level (so 40 points at level 4), plus 2 points for every answer in your current streak, up to +20. Every fifth answer in a row also adds 2 seconds to the clock. There's no penalty for a wrong answer except losing your streak and dropping one level.
Equations: each puzzle is worth 75 points in round 1, rising by 25 every round to 300 in round 10. You also earn 10 points for every second left on the clock, and a streak of correct answers adds 10% per extra answer, up to +50%. A miss or timeout scores nothing and resets the streak.
What's in each Sprint level
- Levels 1–2: single-digit and small two-digit addition and subtraction.
- Levels 3–4: bigger sums, times tables up to 10 × 10 and simple division.
- Levels 5–6: two-digit addition and subtraction, tables up to 12 and two-digit × one-digit multiplication.
- Levels 7–8: order of operations (such as 18 + 9 × 8), squares and percentages.
- Levels 9–10: two-digit × two-digit multiplication, larger division and multi-step problems.
A short history of math symbols
The symbols in these puzzles are younger than you might think. The plus and minus signs first appeared in print in a German arithmetic book by Johannes Widmann in 1489. Welsh mathematician Robert Recorde invented the equals sign in 1557, choosing two parallel lines because “no two things can be more equal.” William Oughtred introduced × for multiplication in 1631, and Johann Rahn used ÷ for division in 1659.
If you enjoy number puzzles, try KenKen, Sudoku or 2048, test your recall with Number Memory, or browse all our number games.
Frequently asked questions
Are these math games free?
Yes. Both Sprint and Equations are completely free to play in your browser, with no download or account needed. They work on phones, tablets and computers.
Are the math puzzles good for kids?
Yes. Sprint starts at simple single-digit sums and only gets harder as the player answers correctly, so it adapts to younger learners. Equations is a great way to practice inverse operations and the order of operations.
Are these math puzzles for adults too?
Definitely. Sprint climbs to two-digit multiplication and multi-step problems, and the later Equations rounds require careful thinking under time pressure. Chasing a high score on the leaderboard is a fun daily mental workout.
Do I need to press Enter in Sprint?
Usually not. Your answer is checked automatically as soon as you've typed as many digits as the correct answer has. You can press Enter or ✓ to submit a shorter answer early.
What does the order of operations mean?
It's the rule for which part of a calculation to do first: parentheses, then multiplication and division, then addition and subtraction, working left to right. In the US it's often remembered as PEMDAS.
Can there be more than one answer to an Equations puzzle?
No. Every puzzle is generated and then checked by the game to make sure exactly one number or operator makes the equation true.
How can I get faster at mental math?
Practice a little every day, learn your times tables up to 12 × 12, and use strategies like rounding to friendly numbers and breaking multiplications into parts. A daily Sprint is a quick way to track your progress.