Improve your ability of oral arithmetic, memory and logical thinking;
Fun, fun and can improve themselves, genius must play games!

The title will include:
=> 1-5 digit addition and subtraction
=> 1-3 digit multiplication and division
=> Add and subtract
=> Mixing multiplication and division
=> Mixed operations of addition, subtraction, multiplication and division
=> Decimal arithmetic
=> Negative operation

Contact us:
Feedback: [email protected]

Support customized topics:
For example, first-year oral math problems, second-year oral math problems, or more difficult problems. If you need to customize, please email.