Fast Math - Addition
Try to beat the clock by answering randomly-generated, medium-difficulty addition problems in your head. This quiz changes every time you play!
Time's Up!
You answered 0 correct out of 0 questions.
Accuracy: 0%
Best streak: 0
Your high score: 0
- 1Click Start — all 20 problems appear on screen instantly.
- 2The current row is highlighted. Type the answer and press Enter to lock it in.
- 3Correct fills the row green ✓, wrong fills it red ✗ with the right answer shown.
- 4Press Enter on an empty input to skip a row and move on.
- 5You have 2 minutes 30 seconds — score as many correct as you can!
Fast Math - Addition: A Mental Arithmetic Speed Drill
Each round generates 20 completely random addition problems — no two games are the same. Every problem is kept at a medium difficulty: two-digit and three-digit numbers that need real mental-math effort, without going into single-digit-easy or oversized four-digit territory. The 2 minute 30 second clock keeps the pressure on while you try to build your streak and beat your best score.
Frequently Asked Questions
How hard are the questions?
All problems are medium difficulty — a mix of two-digit + two-digit and three-digit + two/three-digit addition. There are no single-digit freebies and no oversized numbers, so every problem needs actual mental math.
Are the questions the same every time?
No — 20 problems are randomly generated at the start of each game, so every round is different.
Can I skip a question?
Yes. Press Enter on an empty input to skip to the next question. Skipped questions are marked in the answer sheet at the end.
How is my score calculated?
You get 1 point for each correct answer. Wrong answers and skipped questions don't earn points but also don't deduct points.
Is my high score saved?
Yes — your best score is saved locally in your browser so you can track your improvement over time.