关于本游戏
There will be a addition/subtraction problem in given para. You have to choose CORRECT option. To Score best, keep choosing right ones!
难度: ●●○○○ 约 5 分钟
玩法说明
Tap on the Correct option
There will be a addition/subtraction problem in given para. You have to choose CORRECT option. To Score best, keep choosing right ones!
Tap on the Correct option
