BackMental Math Sprint
The science →
∑∫√π∞%Δ≈±×÷=+−7429
Score 0Best —
12 + 34
?
How to play

1. You have 60 seconds to solve as many problems as possible.

2. Type the answer with the numpad (or keyboard) and hit Submit.

3. Wrong answers clear the input — try again on the same problem.

easy
+, − up to 20
medium
+, −, × up to 50
hard
+, −, ×, ÷ up to 99
All-time stats
easy
best —
medium
best —
hard
best —