기본적인 산술 연산을위한 교육 도구를 사용하기 매우 편리합니다.

This free App is a very simple to use training tool for the basic arithmetic operations. 1. “Flip Tile” (Addition, Subtraction, Multiplication and Division). Tap '?' to reveal the answer. Tap '->' to get another problem. Tap 'Range' to get bigger numbers. 2. “Multiple Choice” (Addition, Subtraction, Multiplication and Division). This App is Ad-supported, and the network communication permissions are required just for the ads. We really appreciate your time and your support, thank you very much!