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Home > CCG > Chapter 7 > Lesson 7.2.3 > Problem 7-80


It is often useful to estimate the value of a square root to determine if your answer is reasonable.  

  1. What would be a reasonable estimate of ? Explain your thinking. After you have made an estimate, check your estimation with a calculator.

     because , so  must be a little higher.

  2. Repeat this process to estimate the values below.





    Since square root of is , then square root of is a little more .