Q&A for How to Use a Calculator

Not all calculators have cube root features. If your calculator has this function, input the number first, then press the cube root button. The symbol for the cube root typically looks like a radical sign with a small '3' in its upper left corner, and this feature is usually found on scientific and graphing calculators.

You will find the natural logarithm function typically shown as 'ln' on a calculator.

When dividing using a calculator, first enter the dividend (the top number), followed by the division sign, then the divisor (the bottom number), and finally the equal sign.

Follow the normal order of operations. First multiply 2 by 2, and then add that product to the initial 2, which results in 6. Note that some calculators may display a different answer if they do not automatically apply the standard order of operations.

It depends on the type. For solar-powered calculators, cover the solar panel, or turn the calculator face down to block light. For other models, locate and press the 'On/Off' or similar button, usually found near the display.

Use a trigonometric table to find the values you need.

Most scientific and graphing calculators include a feature to set the number of decimal places; however, the specific steps vary by model. If your calculator does not have this function, you can manually round the results after the calculation is completed.

To convert between binary, hexadecimal, octal, and decimal using the Windows Programmer Calculator, first switch the calculator to Programmer mode from the menu. Then, select the base you want to enter your number in by clicking BIN, OCT, DEC, or HEX. After you type your number, the calculator will instantly display the equivalent values in all other bases.

Standard calculators typically do not have a specific button to count how many numbers you have added. Most scientific and graphing calculators offer a summation function that can track the number of entries through frequencies as you enter them. For basic calculators, it is best to manually count the numbers as you input them.

The ± button typically changes the sign of the entered number after you input it. However, on some scientific and statistical calculators, you can apply it before entering the number. If you do not use this button, the number you input will be treated as a positive integer by default.

Calculators can't show the answer in fraction form, but you will get the answer in decimal form if you add it as: (number/number)+(number/number).

Some international calculators use commas for decimals and decimals for digit grouping. There is often no setting to change this display format. You will need to be aware of this convention when interpreting and writing down values.

You cannot insert spaces between numbers. Instead, simply input the numbers without any spaces.

That’s a common issue many users face while using calculators. Instead of clearing the whole entry, you can simply use the backspace or delete (⌫) button to remove only the last digit entered.

You would need a calculator that allows you to enter variables. Most standard calculators don't allow you to do that. However, if you type it on Google, Google will solve the problem for you.

Do it as you would any other numbers. Just be sure to insert the decimal point(s) in the appropriate location(s). The product will be displayed with the decimal point in the right place.

Calculators don't allow you to insert fractions as such. All you can do is enter the numerator, then the division sign, and then the denominator. It will display the decimal equivalent of the fraction. (Fractions really mean division.)

See Calculate Negative Exponents.

Calculators will never display the equal sign. The equal sign can be understood as the "Enter" sign of a calculator actually performing the intended operation.