Can reasonably divide toilet paper. You can raise your hand to the teacher when you use it, but the teacher will take away the used toilet paper, so you can't check the previous calculations. . Really can't. I thought you answered the questions on the answer sheet. There is a blank on the paper. You should count there. But you should ask the teacher in advance whether you are allowed to write on the paper. Generally speaking, you can, but there will be no problem asking. . .