Key To Decimals offers a unique, proven way to introduce decimals to your students. New concepts are explained in sim ple language and examples are easy to follow. Word problems relate decimals to familiar situations, helping students understand abstract concepts. Students develop understanding by progressing slowly from basic to more complex questions. Students begin their study of decimals in Book 1 using real-life, practical applications. Book 2 focuses on adding, subtracting, and multiplying; Book 3 covers multiplication and division, remainders and place value. Book 4 covers rounding off decimals, estimating, graphing averages and more. This Kit contains only Books 1-4; Answer Notes for Books 1-4 and Tests for Books 1-4 are available separately.