We have a wide selection of calculators that can fit any need. With America Online and game buttons, the Tandy/Casio mixes business and. To look at it another way, we are asking the calculator to tell us the number that $480 is 60% of. Shop our highly affordable calculators for your classes, home, or business. In the example above, the selling price (as computed by the calculator) is $800, so the profit rate of 40% gives a profit of $320.īefore performing the calculation, we did not know what the selling price would be, just that the purchase price of $480 should be 60% of that unknown amount (as 100% - 40% = 60%). To clarify further, the profit rate is relative to the selling price, meaning the percentage of the selling price that is profit. From the Main Menu, use the arrow keys to highlight the Complex icon, then press p or press 2. The selling price would be $800 and the profit would be $320. QUICK START GUIDE fx-991EX The fx-991EX ClassWiz features a high-resolution display, making it easier to view formulas and symbols. Complex Number calculations can be executed in the Complex Mode. If the purchase price of an item is $480 and the profit rate is 40%, what would the selling price and profit be?
Percent key This button (or Enter button) displays the result of an arithmetic operation as a. Certain functions make use of the button to signify the end of input, in order to evaluate a result.
#Casio calculator buttons meaning how to#
The key is the markup key. Examples showing how to use this key can be found in the middle column of page 2 of the manual. Unless the button is pressed, it is possible that an operation is incomplete - pressing ensures that no arithmetic operations are pending. displays memory contents and also clears the memory. displays memory contents without clearing them. is the change sign key, to change between a positive and negative value. This is described in the right column of page 2 of the manual. This is described at the bottom of the middle column of page 2 of the manual. is the subtotal key, is the total key, and is the grand total key. If you need to clear the entire calculation sequence, then use the (clear all) key instead. Here are descriptions of some of the other more commonly used keys. These keys have plastic markings that do not wear or fade even after years of use.Įntering two zeros at a time helps to calculate large numbers quickly.The key only clears the current entry. To save battery power, the calculator turns off automatically after approximately 6 minutes of non-use. Separation every three digits makes even large numbers easy to read. Key operations are stored in a buffer, so nothing is lost even during high-speed input. Decimal selectorĤ,3,2,1,0 : Specifies the number of decimal places as 4,3,2,1,0.ĪDD2 : 2 decimal places are assumed for entries and results of all addition and substruction operations.Rounding selectorĥ/4 : Values are rounded off.Sign change (+/-)Ĭonverts the value from positive to negative or vice versa.Shift keyĬlear one character at a time starting from the last digit.Perform constant calculation easily by pressing arithmetical operation keys(+,-,×, ÷) twice. Profit margin percent “ % ” key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values.
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