Math Mammoth Grade 3-A worktext (Light Blue Series) is the student book for the first half of third grade math. In this part A, the main areas of study are: * addition and subtraction within 1,000 (including mental math); * the concept of multiplication; * the multiplication tables; * telling time and working with time intervals; * counting coins and solving problems related to money. A companion to this book, Math Mammoth Grade 3-B worktext, covers the second half of 3rd grade math (available separately at Lulu). Also available are the answer keys and a book containing cumulative reviews and chapter tests.