Featuring activities, full-colour images, and the trusted Kumon learning method, My Book of Simple Subtraction helps students aged 5 to 7 learn to add single-digit numbers in a step-by-step manner, enabling them to gain solid calculation skills without being confused about decimal places. Building basic subtraction skills is vital to later understanding the decimal system, the foundation of higher-level arithmetic concepts and skills taught in school curriculums. Kumon Math Skills Workbooks are unique because they focus on teaching one specific skill from start to finish. With just the right amount of practice, children master each topic and gain confidence without becoming bored or frustrated.