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## How do you use variables on a TI 84?

Press and release the “VARS” key (column 4, row 4). Select the 5 option (the Statistics option) on the display screen. Press the “ENTER” key to display the parameter menu options. Select the standard deviation parameter option (option 3) on the screen to select the standard deviation as a variable for a new equation.

## How do you do variables on Google calculator?

Begin by performing a Google search for the formula in question (e.g. area of a circle or triangle). A screen will then appear prompting you to enter the value(s) for the variable(s) in question. Enter the value(s) and simply press ⏎ Return to see the answer.

**Where is the Vars button on TI 89?**

Engage VAR – found above the subtraction key – to find the Y1 variable. Arrow down on that menu to find your function, Y1. Hit ENTER. Now enter numeric value or variable.

What all the buttons stand for on a scientific calculator. Completely clears the calculator. Clears the last entry on the calculator, but keeps previous ones. The button to calculate addition. Subraction or negative. The button to calculate subtraction or to start a negative integer. The button to calculate multiplication.

### How do you insert a number into a variable?

After you have stored a number in a variable, you can insert that number into an expression. To do so, place the cursor where you want the number to appear, press [ALPHA], and press the key corresponding to the letter of the variable in which the number is stored.

**How do you do Division in a calculator?**

– Division which is also known as thedivide function can be performed by clicking the “/” button between the given variables. The division can be easily written as x/y.

#### How do you store a number in a variable?

If necessary, press [2nd] [MODE] to enter the Home screen. Enter the number you want to store in a variable. You can store a number or an arithmetic expression. The result of this action is shown in the first screen. Press [ALPHA] and press the key corresponding to the letter of the variable in which you want to store the number.