Math Mammoth Grade 4-A student worktext covers addition, subtraction, patterns, graphs, large numbers, multi-digit multiplication, time, and measurement. It is meant for the first half of grade 4. This student worktext contains both the necessary instruction and the problems & exercises (the 'text' & and the 'work'; thus a "worktext"), and is fairly self-teaching. The curriculum meets and exceeds the Common Core standards. This is the full-color version; in other words, the inside pages are in full color. Please note this is a student worktext and does not contain answers.