Filled with full color exercises, this Grade 3, Unit 4 workbook covers the concepts of estimation, rounding, Roman numerals, place value to the housands' place, adding and subtracting fractions, and more. The math Lifepac curriculum brings the orderly science of math into a clear focus. Perfect for students who flourish in a self- paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews and tests. Individual Lifepacs are perfect for remediating 'learning gaps'. 34 pages.