Mathematics can be a challenging subject, but it doesn't have to be! This textbook, written specifically for high school students, provides a clear and concise introduction to arithmetic principles and operations. With plenty of examples and practice problems, students will gain the foundational knowledge and skills they need to succeed in higher-level math courses. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.