If it's SAT math, take out the books before grade three, review the most basic formulas in each chapter, and then do 3 or 4 sets of real questions in the examination room to get full marks.

If it is SAT2 math, there are two books. One is Princeton's and the other is Brown's. Princeton's knowledge of mathematics is not as extensive as Brown's, but Brown seems to cover a little more. The actual test difficulty is similar to the questions at the back of Princeton book. My personal experience is to buy both, watch Balaam and be Princeton.

Title: Barensate Mathematical World Book Publishing House

Title: Princeton Sat Mathematics Level 2 Princeton Review

(Balang is China's agent. Although the title is in Chinese, the content is still in English. Princeton doesn't represent China.