This is a terrific workbook for any 3rd grade aged kids to help them practice their math skills. This book has 150 pages of math problems, from simple addition, subraction, division, and multiplication to word problems, telling time (with face clocks), money, measurements--weights, volumes & distance, in both regular (inches) and metric (centimeters), and Roman Numerals. It was a terrific workbook that both my kids used during the summer to keep up with their math skills. It's well laid out to build on skills, going to progressively harder problems with each chapter, with answers in the back for each and every problem. It's a really good math book that my kids actually enjoyed working on!