The basic skills are used in normal childhood interactions, such as sharing cookies by subtracting from the original number to ensure the children have the same number of treats. By focusing on the basics of adding and subtracting, teachers/parents can provide a stronger foundation in math skills for the future. The ability to 'Add up' is important in all aspects of life, at home, school, work and socially. This workbook aims to have kids have a strong confident and influet in basic addition. There are totally 3000 exercised with many levels since beginners to advanced. As children build understanding about addition and subtraction, it is important that they become accustomed to making these connections. We can use addition to solve subtraction problems because subtraction is the inverse operation to addition.