This workbook contains exercises that develop children’s ability to multiply, divide, and round numbers up to a hundred thousand places. Although the workbook has frequently fraction problems: add and subtract fractions, equivalent fractions, a fraction of a number, compare fractions, multiply fractions by a whole number. Children learn to solve equations with variables and establish the order of operations. The workbook contains many problems to improve multiplication and division skills, memorize multiplication tables, and boost word problem-solving skills. In addition, some problems help to improve memory and logical thinking.