9.1 square roots day 2
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Square Roots
9.1
Day 2
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Essential Questions
What is the difference between an irrational number and a rational number?
How are real numbers and the Pythagorean Theorem used in everyday life?
What types of real-life situations could the Pythagorean Theorem or square roots apply to? Why?
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Perfect Square
What is a perfect square?
How do I know if a number is a perfect square?
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GUIDED PRACTICE for Examples 1 and 2
Find or approximate the square root to the nearest integer.
1.
23 2. 41= 4.7958
= 6.40312
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GUIDED PRACTICE for Examples 1 and 2
Find or approximate the square root to the nearest integer.
1.
23 2. 41
ANSWER
6
ANSWER
5
= 4.7958= 6.40312
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Daily Homework Quiz For use after Lesson 9.1
Use a calculator to approximate the square root. Round to the nearest tenth.
1. 38√ 2. 95.8√= 6.1644 = 9.7877
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Daily Homework Quiz For use after Lesson 9.1
Use a calculator to approximate the square root. Round to the nearest tenth.
ANSWER 6.2
1. 38√ 2. 95.8√
ANSWER 9.8
= 6.1644 = 9.7877
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Daily Homework Quiz For use after Lesson 9.1
Find the square root.
4.
–25
81
3.
16
49
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Daily Homework Quiz For use after Lesson 9.1
Find the square root.
4.
–25
81
3.
16
49ANSWER
4
7
ANSWER5
9–
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Evaluate - Simplifying
25
64
36
225
144
100
=
=
=
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Evaluate - Simplifying
5
825
64
36
225
144
100
=
=
=
6
15
12
10=
11
5
2
5=
21
10=
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Homework
Page 472 #1-20, 42-45, 54-57