My name is George, and I am a teacher of mathematics and computer science. I am a new seller on Teachers Trading, and I am excited to share my educational materials with you, primarily in the field of mathematics. To begin with, I will share materials from arithmetic, such as exercises related to natural numbers, integers, decimal numbers, and fractions. Most of my educational materials in mathematics always contain 260 exercises, divided into 26 columns with ten exercises in each. The exercises are available in both standard and enlarged versions. At the end of the document, you will always find the solutions or results for all exercises. As a new seller, I believe that when purchasing my materials, you will appreciate the wide range of exercises on a single topic, allowing your students to practice intensively. Additionally, one column can be used as a test or as homework.