Skill: decimals-add-subtract
Decimal Add-Sub Sprint
60 seconds of lined-up addition and subtraction — plus estimate lightning rounds to keep your point honest.
How to play
Answer decimal questions against the clock. Type decimals like 3.65 or whole-number estimates.
- 1A correct answer scores +10 points. Streaks of 4 or more earn a bonus of +2 per streak level beyond 3 — keep the streak alive.
- 2A wrong answer costs 1 life, resets your streak, and shows a short explanation of why the correct answer is right.
- 3The game ends when the timer hits 0 or you lose all 3 lives. Questions start easy and ramp up.
Time
60
Score
0
Streak
0
Lives
Question 1
Best streak 0
Warm-up
Type the decimal (3.65) or the estimate.
Line up the points. Estimate first.