Math+- is a great educational game for kids to learn addition and subtraction.
Apple Store
https://itunes.apple.com/us/app/math+/id1054237009?ls=1&mt=8
Google Play Store
https://play.google.com/store/apps/details?id=com.guri.math
Math+- is an excellent educational game for children of kindergarten and primary school learn math operations of addition and subtraction!!! Children can enjoy the game alone or in the company of family or friends.
The game Math+- uses animated features, sounds and music for the learning of addition and subtraction calculations to be an activity where children will develop their cognitive ability, memory, reasoning, coordination of an interactive and enjoyable way.
The game Math+- has 3 stages: Easy, Normal and Hard
Easy - 3 to 5 years old
Normal - 6 to 7 years old
Difficult - 8 to 10 years old