Number games and mental math
Games with numbers for every taste: calculate fast, combine numbers to hit a target exactly, or fill number grids by logic alone. All free, with no ads and no sign-up.
Some train mental math against the clock, others need no arithmetic at all: sudoku only uses digits as symbols.
Play nowThe games (19)
- Target Number
- Target Number: reach the target by combining six number tiles with + − × ÷. The classic mental arithmetic numbers game, online and free.
- Math Rush
- Timed mental arithmetic: every tile hides a sum, and you sort them from the smallest to the largest result. A quick workout for addition, subtraction and multiplication.
- Math Racer
- Math Racer: your car speeds towards gates, and only one shows the right answer. Mental math and reflexes, faster and faster.
- True or False
- Mental arithmetic under pressure: sums scroll by and you say whether each one is right. Speed and accuracy both count.
- Target Sum
- Quick mental arithmetic: out of six numbers, find the two that add up to the target. Sharpen your additions, round after round.
- Put in Order
- Sort the numbers: integers, decimals, fractions and negatives to put in order. Number sense, against the clock.
- Classic Sudoku
- Classic 9 × 9 sudoku online, free: every grid has a single solution, from easy grids solved with simple deductions to expert ones that take more.
- Killer Sudoku
- Killer Sudoku: a sudoku with no starting digits, split into cages that show their sum. Logic and mental math, one solution only.
- Sudoku
- Free online sudoku on a quick 6 × 6 grid: a new puzzle every game, and a leaderboard to compare your time.
- Mini Sudoku
- A 4 × 4 sudoku to get started or play in a few seconds: the same rules as classic sudoku, on a tiny grid.
- Kakuro
- Kakuro, the crossword with digits: fill each run of cells so it adds up to its clue, without repeating a digit.
- Calcudoku
- Calcudoku (KenKen): a Latin square whose cells are grouped into cages showing a result and an operation. Mental arithmetic and logic, with a single solution.
- Inequalities
- Futoshiki, the inequality sudoku: each digit once per row and column, respecting the < and > signs between cells. Grids from 4 × 4 to 6 × 6.
- Skyscrapers
- Skyscrapers, the logic puzzle: place buildings of different heights while respecting how many you can see from each edge.
- Number Series
- Number sequences to complete: find the hidden rule and pick the next number. Reasoning practice, IQ-test style.
- Logic Jump
- Logic Jump: your character crosses a level obstacle by obstacle, and each gap is cleared by solving a puzzle. Number sequences, at your own pace.
- 2048
- 2048 against the clock: swipe and merge the tiles to reach the target tile as fast as possible.
- Pyramid
- Pyramid solitaire: remove cards in pairs that add up to 13 until the whole pyramid is gone. Every deal can be won.
- Number Rush
- The classic visual speed game: the numbers are scattered across the grid and you have to find them in order as fast as you can. Great for training attention and visual scanning in under a minute.
Mental math: fast and right
Math Rush, True or False and Target Sum chain simple operations. A mistake costs time, so accuracy pays as much as speed.
Number grids
Sudoku, Kakuro, Calcudoku (KenKen-style), Futoshiki: grids with a single solution, from easy to Hardcore with no hints.
FAQ
Which game trains mental math?
Math Rush for speed, and Target Number for combining numbers.
Do I need to be good at math for sudoku?
No: sudoku needs no arithmetic, only logic.