Identify the number
Estimate the square root
Find the nearest perfect squares above and below the number
Use a calculator if exact value is needed
Use the long division method for manual calculation
Use Newton’s method for iterative approximation
For Newton’s method, start with an initial guess
Repeat: new guess = (old guess + number ÷ old guess) ÷ 2
Continue until the result is accurate enough
Verify by multiplying the result by itself
Adjust the decimal places as needed