Estimate Roots Lesson #9 Pg. 241.

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Presentation transcript:

Estimate Roots Lesson #9 Pg. 241

What You’ll Learn Estimate roots using a number line Find the most appropriate approximation of square and cube roots

Estimate Square and Cube Roots You know that is not a whole number because 8 is not a perfect square The number line below shows that is between 2 and 3 Since 8 is closer to 9 than 4, the best estimate for is 3 Actual Numbers Square Roots Above/Below Square Roots Closer to ? 2 2.25 2.5 2.75 3

Example Estimate to the nearest integer

Example Estimate to the nearest integer

Example Estimate to the nearest integer

Example Estimate to the nearest integer

Homework Group #1 Pg. 245-246 (1-8, 12, 13, 15-17, 19) Group #2 1 – 19 all