This App is for the practice of the for the elementary school lower grades of arithmetic.

ADDITION, SUBTRACTION and MULTIPLICATION-TABLE questions are random.
Smileys will be displayed if the correct answer.
Response results understandable for kids will be displayed.
Button will appear large, it has become easy to press even kids.
The correct answer to win badges and badge will be forfeited if an incorrect answer, it has to improve kids' motivation.
You can set about "0", "digit(place)", "addition with carry", "borrowing subtraction", and so on.

This application, make the questions a calculation question in compliance with curriculum guidelines of Japan Ministry of Education.