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Published byPreston Moody Modified over 8 years ago

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**( ) EXAMPLE 1 Evaluating Square Roots a. 36 = 6 6 because 2 = 36 . b.**

= 6 6 because 2 = 36 . b. 64 – = –8 because (–8) 2 = 64 . because ( ) 2 5 c. 4 25 2 5 = 4 25 = . d. 0.81 = 0.9 because (0.9) 2 = 0.81 .

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EXAMPLE 2 Standardized Test Practice SOLUTION 2 is closer to 9 or 10. You can use a number line to approximate 95 nearest whole number. Because to the is between 9 and 10, you need to decide whether Find 9.5. You can calculate that 9.5 = and ( ) = 95.

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EXAMPLE 2 Standardized Test Practice 95 As shown on the number line, is between 90.25 and 100 , so it has a value between 9.5 and 10. Therefore, is closer to 10 than it is to 9. 95 ANSWER To the nearest whole number, 10. The correct answer is C.

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GUIDED PRACTICE for Examples 1 and 2 Find or approximate the square root to the nearest integer. 1. 4 ANSWER 4 = 2 2. ANSWER =

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GUIDED PRACTICE for Examples 1 and 2 Find or approximate the square root to the nearest integer. 3. 36 – ANSWER = –6 36 – 4. 81 – ANSWER 81 – = –9

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GUIDED PRACTICE for Examples 1 and 2 Find or approximate the square root to the nearest integer. 5. 23 ANSWER = 23 5 6. 41 ANSWER 41 = 6

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GUIDED PRACTICE for Examples 1 and 2 Find or approximate the square root to the nearest integer. 7. 25 81 ANSWER = 1 25 81 8. 0.36 ANSWER 0.36 = 1

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