When choosing a math workbook, I’m usually looking for one simple thing: each topic is represented by a large amount of exercises. The “large” is extremely important as in math, like in many other fields of study, “repetition is the path to mastery”. Having tried numerous books, I can definitely say that this one (actually these two Part I and Part II) deserves a place on my table. The book is well organized and covers all material required for the 3rd grade Common Core. The multiple choice questions (Part I) contain fairly large amount of word problems, which is big part of CC, and the free response part (Part II) does have some challenging questions. What I like the most is its reasonably-sized daily exercises, which, if done daily, definitely improve results.