Silly Ways To Solve Math Problems

In the video the chef is kind of solving the problem correctly but it is not exactly the right way to solve the problem. I understand how he is trying to solve the problem. But if he were to use the ones as tens when he was adding he would have gotten the multiplication problem correct. Some other numbers that you can do this with are 13 & 7, 14 & 6, 15 & 5,or 16 & 4.If you where to us any of these problems and try to solve them the same way as the chef you would run into the same problem. In the second video the dad was trying to solve the problem the same way as the chef from the first video.