The Casio FX 82MS is an all-purpose scientific calculator that is ideal for high school and college level mathematic problems. The two line display of this Casio scientific calculator allows you to review and punch in long equations. This Casio calculator has 240 varied functions that deal with general mathematics, trigonometry, and statistics. Nine variable memories allow you to store results for future reference in this Casio scientific calculator. The Casio FX 82MS is a hardy model with plastic keys and a study slide-on hard case that protect it from the rough school environment. This sturdy Casio calculator runs on one AA size battery, which is easily available everywhere.