Finding Square RootsThe easiest way to find a square root is to use a calculator, but you can do it without one. Here’s one way, using 12 as an example of the squared number:
3.5 × 3.5 = 12.25—Close, but not close enough! Repeat steps 2 and 3 until the number squared is very close to 12: Divide: 12 ÷ 3.5 = 3.43 Average: 3.5 + 3.43 = 6.935 6.935 ÷ 2 = 3.465 3.465 × 3.465 = 12.006, close enough! Fact Monster/Information Please® Database, © 2007 Pearson Education, Inc. All rights reserved.
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