Automatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount. Function command signsA symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing. Specifies the number of decimal places as 4,3,2,1,0. ADD2: 2 decimal places are assumed for entries and results of all addition and subtraction operations. Profit margin percent" % " key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values