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www.homeschoolmath.net/teaching/square-root-algorithm.php

In addition to giving a way to find square roots by hand, this method can be used if all you have is a cheap 4-function calculator. If students can get square roots manually, they will not find square roots to be so mysterious. Also, this method is a good first example of an itterative solution of a problem.

www.wikihow.com/Calculate-a-Square-Root-by-Hand

How to Calculate a Square Root by Hand. In the days before calculators, students and professors alike had to calculate square roots by hand. Several different methods have evolved for tackling this daunting process, some giving a rough...

www.math.com/students/calculators/source/square-root.htm

Free math lessons and math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find solutions to their math problems instantly.

Finding the square root is easy for any perfect square under 100! You'll be able to calculate squares faster than ever and amaze everyone with your utter genius! To find the square root of non ...

en.wikipedia.org/wiki/Methods_of_computing_square_roots

In numerical analysis, a branch of mathematics, there are several square root algorithms or methods of computing the principal square root of a non-negative real number.For the square roots of a negative or complex number, see below.. Finding is the same as solving the equation () = − = for a positive .Therefore, any general numerical root-finding algorithm can be used.

We're asked to find the square root of 100. Let me write this down bigger. So the square root is this big check-looking thing. The square root of 100. When you see it like this, this means the positive square root. If you're familiar with negative numbers, you know that there's also a negative ...

www.mathsisfun.com/square-root.html

That was interesting! When we square a negative number we get a positive result.. Just the same as squaring a positive number: (For more detail read Squares and Square Roots in Algebra) . Square Roots. A square root goes the other way:. 3 squared is 9, so a square root of 9 is 3. A square root of a number is ...

www.calculatorsoup.com/calculators/algebra/squareroots.php

Square root calculator and perfect square calculator. Find the square root, or the two roots, including the principal root, of positive and negative real numbers. Calculate the positive principal root and negative root of positive real numbers. Also tells you if the entered number is a perfect square.

www.wikihow.com/Find-a-Square-Root-Without-a-Calculator

To find the square root of a whole number, you could also divide the whole number by numbers until you get an answer that is the same as the number you used to divide the whole number. For example: 16 divided by 4 is 4. And 4 divided by 2 is 2, and so on. Thus, in those examples, 4 is the square root of 16, and 2 is the square root of 4. ...

www.math.com/school/subject1/lessons/S1U1L9DP.html

Finding square roots of of numbers that aren't perfect squares without a calculator. 1. Estimate - first, get as close as you can by finding two perfect square roots your number is between. 2. Divide - divide your number by one of those square roots. 3. Average - take the average of the result of step 2 and the root. 4.

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