Estimate the size
A quick estimate helps you catch digit slips before submitting.
60-second speed test
Mental Math Test
Test how many whole-number calculations you can solve accurately in one minute. The score is transparent, and the result is a practice baseline—not a measure of intelligence.
- Free and no signup
- Clear one-point scoring
- Keyboard and mobile keypad
Unlimited practice
Choose your pace
Mixed practice uses a standard question mix. Solve freely for 60 seconds.
Reuse or share this setup
Same settings, fresh questions each time. No name, score or player ID is included.
Teaching a group? Use the tracking-free classroom kit →How this game works
Focused practice, useful feedback
This mixed test moves through addition, subtraction, multiplication, and exact division. The question generator balances operations and prevents long runs of the same symbol.
Standard difficulty uses mostly Tier 3 questions with a smaller share of Tier 2 and Tier 4. That creates a brisk test for teenagers and adults without introducing fractions, decimals, or negative answers.
Calculate with less friction
Split by place value
Break the second number into tens and ones to reduce working-memory load.
Use inverse checks
Multiplication facts provide a fast check for exact division.
Turn your test result into a useful next step
1. Work one example
For 74 + 38, first estimate 70 + 40 = 110. Then add tens: 74 + 30 = 104. Add the remaining 8 to get 112. The exact answer is close to your estimate.
Use the same habit with division: 156 ÷ 12 = (120 ÷ 12) + (36 ÷ 12) = 10 + 3 = 13.
2. Practise without pressure
Use ten untimed questions to try the method. A skip is a chance to pause and explain a strategy, not a reason to chase a faster score.
Open focused untimed practice →3. Keep a fair baseline
Use the same operation, fixed difficulty, time format and table selection on later visits. Stats compares the latest three rounds with the previous three only when these settings and the ruleset match. Different questions still introduce variation; a small change is not proof of improvement.
Open this fixed baseline setup →After a mixed session, the result suggests an operation to practise based on that round’s mistakes and skips. This suggestion stays on your device; it is not a diagnosis of ability. Teaching someone else? Get the printable classroom kit →
Useful answers
Is this an IQ test?
No. It is a short arithmetic-fluency game and does not measure intelligence.
What is a good score?
Compare your own results using the same mode, difficulty and format. Standard uses a fixed difficulty mix; Adaptive practice adjusts after blocks of five answers.
Can I take it without a timer?
Yes. Select Untimed 10 in the controls above. For a repeatable timed baseline, keep Mixed, Standard and 60 seconds.