83CHAPTER 6Using CalculatorCalculator enables you to perform basic calculations. Use Calculator to dothe following:n Perform addition, subtraction, multiplication, division, and square rootoperations.n Store and retrieve values.n Display the last series of calculations, which is useful for confirming a series of“chain” calculations.To open Calculator:1. Press Home .2. Tap the Calculator icon .Performing calculationsThe Calculator includes several buttons to help you perform calculations.Clears the entire calculation, so that you can begin a freshcalculation.Clears the last number you entered. If you make a mistake whileentering a number in the middle of a calculation, you can use thisbutton to reenter the number without starting the calculation over.