**Square root**

The*square root*of a number is a number which multiplied by itself, gives you the original number. Its symbol is called a*radical*and looks like this: . For example, is 3, because 3 x 3 = 9. Here are a few other square roots:

The is 4 because 4 x 4 is 16 The is 5 because 5 x 5 is 25

Now, here's a problem for you:

What is the square root of 36?