My Book of Simple Subtraction (Revised Edition) (Paperback, Revised ed.)

This workbook will improve and expand on the skills acquired in My Book of SIMPLE SUBTRACTION. In this book, children will practice first how to subtract the numbers 1 through 9 and then they will reinforce this skill by learning how to subtract numbers 1 through 20. The purpose of this book is to prepare children for higher-level mathematics by improving their basic subtraction skills.