Our CCLS (Common Core Learning Standards) series for 4th Grade Mathematics version prepares students throughout Florida for the required Common Core State Standards Initiative to test students' math proficiency. The emphasis is on representing and solving problems involving using operations with whole numbers to solve problems by representing multiplicative comparisons as multiplicative equations; gaining familiarity with factors and multiples using prime numbers and composite numbers; generating and analyzing patterns using numbers or shapes; understanding multi-digit whole numbers using place value and comparison operations; using place value to understand properties of operations to perform multi-digit arithmetic; understanding of fraction equivalence and ordering with fraction models and comparison operators; building fractions from unit fractions; understanding decimal notation for fractions, and comparing decimal fractions; solving problems involving measurement and conversion of measurements using system of units such as km, m, in, hr, min, sec; representing and interpreting data through shapes, line plots, fractions and/or whole numbers; understanding concepts of geometric angles and measurement of angles. These standards are covered extensively by the practice problems. This book contains over 350 practice problems aligned to each Common Core State Standard. In addition the book contains an answer key to practice problems.