how to find the half of a number

multiply it by 0.5 or divide it by 2

Ex:

64x0.5=32

64/2=32

You find the square root of that number.

EX:

The square root of 9 is equal to 3, since (3)(3) is equal to 9.

The square root of 25 is equal to 5, since (5)(5) is equal to 25.

The square root of 100 is equal to 10, since (10)(10) is equal to 100.