How do you get a square root? - Answers

For example, find √36. Think, what number times itself makes 36? 6 x 6 = 36 or 6^2 = 36 Thus √36 = √6^2 = 6 In this case 36 is a perfect square. Definition: A perfect square is an integer of the form n^2, where n is a positive integer. The perfect squares are 1, 4, 9, 16, 25, 36, 47, 64, 81, ... You can estimate the value of a square root by finding the two perfect square consecutive numbers that the square root must be between. For example, estimate √29. Since 29 is between 25 and 36, √25 = 5 and √36 = 6 Thus, √29 is between 5 and 6. If you want a better estimates for the value of √29, you can use the calculator and round the answer to the nearest thousands. So for √29 the calculator displays 5.385164807, round that to the nearest thousands. Since 1 < 5, then √29 ≈ 5.385 Either use a calculator or tables. The only other way is trial and error; # guess an answer # square it # compare 2 with the figure you are trying to find the square root of # adjust your guessand go back to 2