Ryan's Show You Know Page 96

Show You Know Pg.96

For each of the following, use perfect squares to estimate the square root to one decimal place. Check your answer with a calculator.

A)√18 B)√23 C)√35

A) √18

Estimated: √18= 4.1/9

Calculated: √18=4.2426406

√18= 4.24

B) √23

Estimated: √23 = 4. 7/9

Calculated: √23= 4.7958315

√23= 4.80

C) √35

Estimated: √35= 5.10/11

Calculated: √35= 5.9160797

√35= 5.92

Link: http://www.homeschoolmath.net/teaching/square-root-algorithm.php

Homework, Show you know

Homework:

Show you know #1

A triangle has side lengths of 12 cm , 16 cm & 20 cm.

a) What are the area of the three squares that can be drawn on the sides of the triangle?

b) Is the triangle a right triangle? Explain.

Show you know #2

The side of a right angle triangle is 9 cm , 12 cm & 15 cm.

a) sketch a picture of the triangle. Draw a square on each side of a triangle.

b) what is the area of each square.

c) write an additional statement using the areas of the 3 squares.