Math Mammoth Grade 2-A student worktext covers some review of 1st grade math, reading the clock, addition and subtraction facts within 18, adding two-digit numbers, geometry topics, and fractions. It is meant for the first half of grade 2. 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.