Math Speed Challenge
Answer as many mental-math questions as you can in 60 seconds.
How to use: Answer as many mental-math questions as you can in 60 seconds. Press Enter after each answer.
How to use the Math Speed Challenge
Mental arithmetic keeps your number skills sharp and helps in daily life, from checking a bill to estimating a discount. This challenge gives you one minute to solve as many problems as possible.
Pick a level. Easy uses addition and subtraction with numbers up to 20. Medium adds multiplication with factors up to 12 and larger addition and subtraction. Hard includes division and bigger numbers. Press Start, type your answer and press Enter to submit. If you get one wrong, the correct answer is shown briefly and a new problem appears. When the timer ends you will see your correct answers, wrong answers, accuracy and your personal best.
To speed up, learn multiplication tables until they are automatic, and use shortcuts. To add 49, add 50 and subtract 1. To multiply by 5, multiply by 10 and halve. To subtract, count up from the smaller number. Round numbers to the nearest ten, adjust, and then correct. Accuracy matters as much as speed, so avoid guessing.
Problems are generated randomly, always with whole-number answers and never negative results. The game is suitable for children learning arithmetic and for adults who want a brain warm-up. Scores are stored only in your browser.
Frequently asked questions
What operations are included?
Easy: add and subtract. Medium: also multiply. Hard: also divide, with larger numbers.
How is the score calculated?
Each correct answer scores one point. Wrong answers do not subtract points but reduce your accuracy.
Can children use it?
Yes. The easy level is designed for early learners.