Build Math Brain 3.1

This app helps you practice 1-digit, 2-digit, and 3-digit integer calculation (+, -, x, /) without using pen and paper. It can assist you to build stronger math brain. It is also a tool you can use to kill time while waiting for your airplane, train, bus, etc.
1st, 2nd, and 3rd grade students can use this app to sharpen their math skills.