8 year old son loves this app! came upon this one when trying to find a fun way for my 8 year old boy to practice math. he liked it so much that I decided to pay a couple bucks more to "unlock" the additional options that the app offers. It was well worth it!
Mental Math Games FREE for kids for Elementary School & Basic Math for Preschool
Math game for kids to learn basic math skills: add, subtract, multiple & divide!