Math Mammoth Grade 2-B worktext (Light Blue Series) is the second part of a complete math curriculum for second grade, aligned to the Common Core Standards. In this part B, the main areas of study are: * three-digit numbers (chapter 6); * measuring (chapter 7); * regrouping in addition and subtraction (chapter 8); * counting coins (chapter 9); * an introduction to multiplication (chapter 10). A companion to this book, Math Mammoth Grade 2-A worktext covers the first half of 2nd grade math (available separately at Lulu). Also available are the answer keys and a book containing cumulative reviews and chapter tests.