How it works

1. 01

   60 seconds. Go.

   Each game lasts exactly one minute. Answer as many as you can.

2. 02

   One operation per game

   Addition, subtraction, multiplication, or division. Operations are never mixed.

3. 03

   The Daily Challenge

   Everyone gets the same daily challenge, with the same questions in the same order.

4. 04

   Practice Mode

   Unlimited practice to hone your skills. Choose an operation or roll the dice and try a random operation.

5. 05

   Whole numbers only

   All answers are whole, non-negative numbers. No fractions, no decimals.

6. 06

   No login needed

   Jump right into the fun. No need to set up an account.

7. 07

   Share + challenge

   Share your scorecard to challenge friends and show off your genius!