Mental Arithmetic — Free Mental Math Practice Online
Multi-step problems, nothing but your head.
- Mental math
- 4 min
- Medium
Multi-step arithmetic is a working-memory task disguised as a maths task. The hard part is not the sums — it is holding an intermediate result steady while you compute the next one. That storage-plus-processing combination is exactly what the phonological loop is for.
Play Mental ArithmeticHow it works
1A multi-step expression appears.
2Work it left to right, holding the middle result.
3Type the answer on the keypad.
How to play
- 1
Read the problem
An arithmetic expression appears. Early levels are two terms; later ones chain three or more operations.
- 2
Solve it in your head
No paper, no calculator. Work left to right and hold the intermediate result.
- 3
Type your answer
Use the on-screen keypad. Correct answers push the level up, wrong ones cost a life.
What it trains
Compute fast without writing anything down. Multi-step calculation loads the phonological loop, the part of working memory that holds verbal and numeric material while you operate on it.
- Brain area
- Prefrontal cortex + phonological loop
- Based on
- Baddeley & Hitch, 1974
Leaderboard
Weekly season resets every Monday. Scores show as Lvl 5.
Leaderboard
Questions
Are the problems timed?
Yes, and the clock tightens as you level up. Speed pressure is what forces the shortcut strategies to develop.
Can I use paper?
You can, but it defeats the exercise. The load on working memory is the training effect.
Which level is average?
Most players settle between levels 3 and 5. Level 7+ takes deliberate practice with multiplication shortcuts.

