This is math/mathematics worksheets from when I was taking Kumon. It's I教材 (I material) 1-200. Please see below for missing numbers. I was doing this around the time I was in 6th grade. I was able to pass the Math Kentei (Mathematics Proficiency Test) Level 3 with this!! I think it's thanks to the easy-to-understand examples and the gradual progression of the Kumon style. My name is written on them, and they have been graded. For those who won't misuse them and don't mind, or for those who can erase the writing with an app... how about it? Missing numbers: 5, 38, 144-147, 149, 155, 157-167, 170, 171, 173 Educational materials, Kumon, What's the problem, Kumon, Mathematics, Math, I material, Worksheets The packaging will be simple. I will compress what I can to make it as small as possible and use the cheapest shipping method, so please understand. These are used items, and if you have specific packaging requirements, please consult with me before purchasing. I have inspected them, but it's a personal inspection. I've checked to make sure there are no major oversights, but I apologize if there are any small ones. I've looked through them twice, but I apologize if there are any further missing numbers. Thank you for your understanding!