Environmentally friendly 10-digit scientific calculator is made with recycled plastic and built-in antimicrobial protection. Antimicrobial protection reduces the growth of microbes and bacteria that can cause stains and odors. Excellent for biology,general math, algebra, geometry, trigonometry, statistics and science. Calculator multiplies, divides, subtracts, and adds fractions in traditional numerator/denominator format. Other functions include three memories, trigonometric functions, degrees/radians/grads, hyperbolics, polar/rectangular conversion, common and natural logarithms, DMS/decimal degrees, fractions/decimal conversions, universal powers and roots, and reciprocals and factorials. Calculator runs on battery power and comes witha protective hard shell case.