Math Duel: Challenge a friend!

Math Duel :Challenge a friend! Improve together.

Be good, Be fast , Be better!

Keep your mind sharp and alert by using Math Duel to boost your mental powers both in general cognitive function and mental arithmetic. By working on a regular basis on this challenge you will keep the effects of aging away by continually enhance your mental muscle.

By using Math Duel you will improve your math skills. Challenge and friend to a duel and test yourself. Fastest draw wins!
This mind duel is great for all ages.
7 skins.
This version has ads. Can buy the full version, ad free, and including many more games, here: https://play.google.com/store/apps/details?id=com.turtlelabs.DesafioMatematico