Fury Math - Challenge of math description

Fury Math is a new challenge for your math skills, good brain training exercises for all ages.
How to play:
- Tap on question marks to choose hidden operators within 15 seconds
- Tap on "Solve" button to get the result
- You just got total 3 times wrong choice
- The faster you solve, the more scores you get
- The complexity will be increased by each level you pass
- Try to get more and more scores as possible. There many classes about your math skill: below average,average, good, very good, excellent, genius...