September 18, 2015
4.1
Irrational Numbers
and
Square Roots
September 18, 2015
16
REAL NUMBERS
Rational Numbers (Q)
Integers (Z)
Whole Numbers (W)
Natural Numbers (N)
Irrational Numbers
September 18, 2015
September 18, 2015
Vocab
area = length of the side of a square
September 18, 2015
What are the next two perfect squares?
September 18, 2015
What is a perfect square?
a number made by squaring a whole number
32 = 9, 9 is a perfect square
the area of a square whose side length is a
natural number
area = 9
side length = 3
September 18, 2015
Find the perfect squares
40
26
169
1
132
2
152
225
225
3
202
400
400
4
1002
169
10,000
152
202
100
1,000
10,000
200
132
September 18, 2015
Square roots
3 squared is 9
3
9
The square root of 9 is 3
32 = 9
9=3
September 18, 2015
Perfect Squares
12
1
22
4
32
9
42
16
52
25
62
36
72
49
82
64
92
81
102
100
112
121
122
144
132
169
142
196
152
225
162
256
172
289
182
324
192
361
202
400
September 18, 2015
September 18, 2015