***As always, our kid’s apps have no ads or in-app purchases.***Your city is under attack! You must defend it against the unmanned aerial vehicles (UAVs) that are advancing by hacking into their internal computers and sending the self-destruct codes for each UAV before it reaches your city!The self-destruct codes are sent each time you correctly answer a math problem. Answer quickly and correctly or your city will be destroyed!What reviewers are saying about Math Defense:"If there is someone in your household who is learning math, definitely pick this app up." -DroidIdol.com"…don’t be ashamed if you find yourself playing math defense long after little Johnny went to bed." – 100BestAndroidApps.com"Makes math fun!" -John"… it’s a good, challenging math game with good replay value." -BillMath Defense-Addition is a math game that lets you practice math skills in addition. You are able to focus on a specific set of numbers. The full version of the game allows you to practice subtraction, multiplication, and division too.Math Defense turns learning math facts into a fun game. You can start out slow and increase the speed as your skill increases. With a high score list on each speed you’ll find yourself getting better at math while trying to beat your last high score!There are 5 speeds, from beginner to insanely fast.Addition modes: 0-5, 0-10, 0-100Math Defense has simple touch controls that anyone can use.Great for kids and other students learning math.Can be used as just a multiplication game to help prepare for timed multiplication tests.Works great on tablets and phones.No Advertisements!