12 Ch3 Lesson 9 EstimateRoots1 advanced.notebook October 05, 2016

Warm­Up:

Chapter 3 Lesson 9: Estimate Roots

Today's Warm­Up: Perfect Square/Cube BUZZ

You will need a clean sheet of paper numbered (1­30)

√8 is / is not a whole number.

12 Ch3 Lesson 9 EstimateRoots1 advanced.notebook October 05, 2016

Examples:1.) Estimate √83 to the nearest integer.

Examples:

2.) Estimate √320 to the nearest integer. 3

63 = _____ 73 = _____(Hints)

12 Ch3 Lesson 9 EstimateRoots1 advanced.notebook October 05, 2016

Birds on a Wire!Birds on a Wire!0

8

- 1- 725

15

2- 20

Move the birds so they are placed closest to there

whole number square root estimate.

Got it? Give these a try...

a.) √35b.) √170

c.) √44.8

d.) √623 e.) √253 f.) √129.63

12 Ch3 Lesson 9 EstimateRoots1 advanced.notebook October 05, 2016

How many small squares fill the large square? _____

This measurement is called the __________

What is the length of one side? _____

How does the length of one side of a square relate to the area of the square?

(click here)

Example: Wyatt wants to fence in a square portion of the yard to make a play area for his new puppy. The area covered is 2 sq. meters. How much fencing should Wyatt buy? Estimate to the nearest meter.

2 m2

area of the square

12 Ch3 Lesson 9 EstimateRoots1 advanced.notebook October 05, 2016

Now you try... Kelly needs to put a trim around a circular table cloth with a diameter of 36 inches. Use the equation C = πd to find the approximate amount of trim she would need to buy. (Use 3.14 for π)

36 indiameter