The purpose of this Guide is to help students systematically prepare for the computation portion of the Florida College Level Academic Skills Test (CLAST). It provides a simple CLAST Pretest indexed to specific sections of the Guide, followed by examples and practice exercises for each CLAST skill. A sample CLAST Posttest provides additional practice. The Posttest is also indexed to specific sections of this Guide so that students may quickly focus on further review as necessary. The Appendixes contain an arithmetic review, glossary of terms, and answers to the practice exercises.