60-Second Subtraction Test

Subtraction at medium difficulty. Count up or round-and-correct; whichever is faster. Your personal best is saved on your device only.

How scoring works

• Correct answers are the headline number — speed that sacrifices accuracy is not speed.
• Questions per minute measures raw fluency.
• Points = 10 per correct answer + an accuracy bonus, so guessing doesn't pay.

Warm up first in practice · keep skills fresh with the Daily Challenge