# How to Use the Square Root on a Texas Instrument Calculator How to Use the Square Root on a Texas Instrument Calculator

Texas Instruments makes a wide range of scientific and graphing calculators that can do everything from simple addition and subtraction to making graphs from complicated formulas. All Texas Instrument calculators have a function called “square root,” which automatically finds the square root of the number you put in. The square root of a number is the number that makes the number when multiplied by itself. “10 x 10 = 100,” for example, so the square root of 100 is 10.

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### Step 1

To turn the calculator on, press the “On” button.

### Step 2

Press “2nd” and then the “Square Root” button, which is the fifth button from the top in the far left row of the calculator, diagonally across from the “7” button.

### Step 3

Enter the number whose square root you want to figure out. For instance, if you want to find the square root of 100, you would enter “100.”

### Step 4

When you press the “Enter” button, the square root of the number you typed in will be shown.