The book provides adult instruction in the CCSS-M arithmetic topics for parents wanting to help their children. The book begins with a clear explanation of why the CCSS-M standards were necessary and how curriculum affects children's learning. The first chapter also describes the nature of mathematical knowledge and easy things for parents to do to ensure their child is successful. The remainder of the book focuses on explaining arithmetic topics from the primary and elementary level with explantions of theory and practice accessible to non-mathematicians. The book includes: 1. numerous step-by-step examples of computations taught to children, e.g., a three-step process for adding fractions that always works; 2. lists of websites offering worksheets for kids; 3. grade-by-grade achievement standards tied to the CCSS-M as each topic is presented, e.g., counting, addition; 4. clear descriptions of the order in which topics should be undertaken to best support their child's learning; 5. a discussion of the purpose of test results and how they should be used to facilitate their child's learning. The book enables parents to have the confidence in their knowledge of arithmetic necessary to help their children.