1月20日的Math games for kids应用程序分析

Addition and subtraction games for children - game, practice and learning. Instructions: try to answers 20 questions as long as the time on the clock is not over. - For each correct answer you will gain extra time. - For each incorrect answer there will be a shortage of time. You can choose between the games: - Addition . - Subtraction. - Addition and subtraction. In addition, you can choose between 3 difficulty levels: easy / medium / hard. At each level a different extra time will be given and melee depending on the level of difficulty. Enjoy!