Play Sum Sprint online
Sum Sprint is an original mental-math arcade game: answer arithmetic questions against a 75-second clock and race to 1,500 points.
Each question offers three answers. Correct answers score 100 points plus a streak bonus that grows to +100, while a wrong answer breaks the streak and costs one of three hearts.
Questions ramp up in three levels — from add and subtract within 20, through times tables, to two-digit mixed arithmetic — so the sprint stays tense right to the buzzer.
Reach the target before time runs out to win; lose all three hearts or finish short of the target and the run ends. Your best score is saved in your browser.
How to control Sum Sprint
- Answer: tap a choice button, or press 1 / 2 / 3
- Restart: R, Mute: M
How to play
- 1
Press START to begin the 75-second sprint.
- 2
Read the arithmetic question and tap the correct answer (or press 1, 2, or 3).
- 3
Correct answers score points and build a streak bonus; wrong answers break the streak and cost a heart.
- 4
Reach 1,500 points before the clock hits zero to win. Your best score is saved in your browser.
Tips for a better run
Answer fast but not reckless: one wrong answer costs a heart, and you only have three.
Keep the streak alive — at a 5+ streak every correct answer is worth double the base 100 points.
Level 1 questions are quick wins; bank a streak early before Level 3 two-digit questions slow you down.
If two options look close, eliminate the one that is off by a round number first — distractors are usually within 10 of the answer.
Use keys 1, 2, and 3 instead of tapping when playing on a keyboard; it saves a mouse move per question.
Frequently asked questions
How do I answer?
Tap one of the three answer buttons, or press keys 1, 2, or 3. A correct answer scores points and builds your streak; a wrong answer breaks the streak and costs one of your 3 hearts.
How is scoring calculated?
100 points for a correct answer, plus a streak bonus of 25 points per streak step up to +100 — so a 5+ streak scores 200 per correct answer.
Do questions get harder?
Questions get harder as you answer more: Level 1 is add/subtract within 20, Level 2 adds times tables, and Level 3 mixes two-digit arithmetic and multiplication up to 12×12.
How do I win or lose?
Reach 1,500 points within 75 seconds to win. Lose all 3 hearts to wrong answers, or run out of time below 1,500, and the run ends.
What is saved as my best?
Your highest score is saved in your browser as your best. It never leaves your device.
