There are many kinds of calculators, but most calculators have the same standard keys that allow users to complete a variety of calculations. The number keys and addition, subtraction, multiplication, division and equal signs are all very straightforward, but the functions of the other keys are not so well-known.
Know MoreTwo very helpful keys on a calculator are "AC" and "CE." The first key clears the entire memory, and the second key only clears the last numbers that were imputed. The "%" key is used to calculate percentages. Users must press the "shift" key before the "%" key to get an accurate answer. The "pi" button displays the value of pi. To get an exponent while entering an equation, users should press the "EXP" button immediately before entering the value of the exponent. The last standard key is the decimal (.), which allows a user to input an equation that includes a decimal.
Most standard calculators also have memory buttons. The "Min" key allows users to save a displayed equation in the calculator's memory. Most calculators have enough memory to store 10 equations or answers. To input an equation manually, users press "M+" to add an equation or "M-" to delete an equation stored in the memory bank. To access an equation stored in the memory bank of a calculator, users can press the "MR," or memory recall, button.
Occasionally, it is possible to receive an error code on a calculator when the incorrect buttons are pushed. This happens most often when a user fails to hit the shift button when pressing keys that require this command. To clear the error message, users should press the "AC" button.
Learn more about Math CalculatorsA RRSP savings calculator is available at GetSmarterAboutMoney.ca. The calculator asks for the amount in RRSP accounts, the annual rate of return while working, the amount and frequency of contribution, current age, and years until retirement. There is also a calculator for someone who is already retired.
Full Answer >To determine a percentage, divide the actual number by the total possible number, and multiply the result by 100. For example, if four out of five doctors agree on something, enter the equation in a calculator as "4 ÷ 5 x 100." The result, 80, is the percentage.
Full Answer >One meter is equal to 3.2808 feet. The meter is the base unit of the metric system, while the foot is used in the imperial and U.S. customary measurement systems. The abbreviation most often used for feet is ft. The symbol primarily used for meter is m.
Full Answer >Some online stores like Wal-Mart, SchoolMart and School Outfitters have calculators that do math fractions. Wal-Mart sells the Casio FX-65 fraction calculator that is suitable for elementary and junior high school students, while School Outfitters has the See 'N' Solve calculator that is useful for children whoare 6 years oldand older.
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