Sale has ended but you can still get this app.
Download 15 Seconds Now

Official Description

15 Seconds tests your basic arithmetic operations like addition, subtraction, multiplication and division.

– Now you can play with your favorite XBox avatar.
-There are 3 difficulty level to challenge your math skills. The four major operations in the game include addition, subtraction, multiplication and division.

– You have 15 Seconds to solve maximum problems. You get 1 second if you get a correct answer.
– Collect all 10 achievements to be the math wizard.
– Track your high scores in each level of the mini games.
– Optimized the game for speed

FEATURES

  • Addition
  • Subtraction
  • Multiplication
  • Division
  • Achievements