Hi guys, Welcome to the Advanced Video Search Engine, and you are watching Addition Math Speed Test (20 Problems) | Add Numbers Fast | Human Calculator Mental Maths Drill. That video is uploaded by Apptato Trivia & Word Games at 2020-07-20T05:30:04-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [xkkbhYg7uvs]