The Core Skills Math series is designed to reinforce math and problem-solving skills. Aligned to the Common Core State Standards for Mathematics, Core Skills Math offers a variety of exercise that help your child practice the strategies necessary to ensure mastery and build math confidence. Each page contains grade-appropriate problems and activities that develop the computation, problem-solving, and reasoning skills vital to success in mathematics. Each book offers your child the opportunity to polish his or her math skills and also demonstrates how math applies to other subject areas such as science, social studies, and language arts. Core Skills Math: Grade 4 covers the following topics.- Developing Number Sense- Adding and Subtracting Whole Numbers- Multiplication and Division Using Facts- Time and Money- Multiplying Whole Numbers- Measurement- Dividing by 1-Digit Numbers- Lines, Segments, Rays, and Angles- Polygons- Understanding Fractions and Mixed Numbers- Using Fractions- Understanding Decimals- Problem Solving