Squares and Square Roots

1
Section 9.1 and 9.2

• Squares and Square Roots
• And
• The Real Number System

2
What are perfect squares?
Squares of whole numbers.

• 12
• 22
• 32
• 42
• 52

62 72 82 92 102
1 4 9 16 25
36 49 64 81 100
121 144 169 196 225
256 289 324 361 400
112 122 132 142 152
162 172 182 192 202
3
Finding Square Roots
4
Estimate the Square Root
5
Using a Calculator
6
Classifying Real Numbers
Irrational Numbers (I)
Rational Numbers (Q)
Integers (Z)
Whole Numbers (W)
Natural Numbers (N)
7
Classify each number.
8
Plot these points on a number line
9
Solve the equation.
10
Solve the equation.
11
Homework
Practice 9.1 and 9.2 Problems odds and word
problems