RN Math Excellence, We are Here to Help. It is documented that medication errors are one of the highest leading cause of death in the United States; according to many published research data available. Our goal is to achieve personal and professional excellence in adult intravenous math calculations using the x factor with dimensional analysis practice equations necessary to reduce preventable medication errors. The content of this math review book includes: more than 170 practice problems of drops per minute, infusion time, weight-based pediatrics, adult IV calculations, and ABG interpretations. We can guarantee 100% improvement if you trust the process(R). You can save many lives by using critical thinking and developmental skills while building confidence and proficiency in your professional career.