HOW TO ESTIMATE THE SQUARE ROOT:
(We will use 28 as our example)
Step 1 - Determine which two perfect squares your number falls between. The answer you are looking for will fall between these two numbers.
28 falls between 25 and 36
Step 2: Determine the perfect square number that is closest to the number you are estimating
Step 3: Find the square root of that number. This is your estimation.
The square root of 25 is 5, so the square root of 28 is about 5.