content: This is a very good if you need a brush up on the very basics like percentage and fractions. This is the first 200 pages and it is very easy. It gives you a sense of achievement and wrongly makes you think you will ace the SAT. The SAT is not this easy...The harder concepts are poorly explained. Explanations to practice questions and tests are extremely shallow and vague. Some of the techniques are much too convoluted and take too much time. There are better strategies than what this book offers.