Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching Addition Math Speed Test (20 Problems) | Add Numbers Fast | Human Calculator Mental Maths Drill. and this video is uploaded by Apptato Trivia & Word Games at 2020-07-20T05:30:04-07:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [xkkbhYg7uvs]