1. Bell Work Write each of the following as a decimal or a fraction….
Remember to look at the # of digits in the repeater.

2. Roots
Lesson #8
Pg. 231

3. Warm Up Simplify each expression. 1) 6² 36 121 2) 112 25 36
3) (–9)(–9) 81 4)
Write each fraction as a decimal. 2 5 5 9 5)
0.4 6)
0.5 –1 5 6 7)
–1.83

4. Vocabulary Objectives Square Root/Cube Root Rational Numbers
Perfect Square /Perfect Cube Irrational Numbers
Natural Numbers Real Numbers
Whole Numbers Repeating Decimal (Rational Number)
Integers Terminating Decimal (Rational Number)
** Natural, Whole, Integers and any number that can be put into a ratio (fraction) * Repeating or Terminating decimals
Index of 2
Index of 3
2 equal factors
multiplied together
3 equal factors
multiplied together
** Non – Repeating, Non – Terminating decimals
** Counting Numbers
** 1, 2, 3, 4, …∞
** Any number (value) on the number-line
** Counting Numbers plus zero
** 0, 1, 2, 3, 4, …∞
** Natural, and Whole plus Negatives
** - ∞… - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4, …∞
Objectives
Evaluate expressions containing square and cube roots.
Classify numbers within the real number system.

5. The Real Number System Rational #s Irrational #s
Every point (value) on the number line
Rational #s
Irrational #s
Can be written as a ratio
Decimal that repeats or ends
Decimals that do not repeat or end
Can not be written as a ratio
Integers
Tic marks on number line
…-2, -1, 0, 1, 2…
Whole #s
0, 1, 2, 3…
Natural #s
1, 2, 3 …

7. What You’ll Learn in Lesson #8
Finding the square roots of perfect squares
Finding the cube roots of perfect cubes
Solving equations involving squares and cubes

8. Vocabulary Square Root Perfect Square Radical Sign Cube Root
Perfect Cube

9. Square Root
A square root of a number is one of its two equal factors

10. Cube Root
A Cube root of a number is one of its three equal factors

11. List the Perfect Squares from 1 thru 20
Homework
All Groups
List the Perfect Squares from 1 thru 20
Pg , 1 – 12, 15 – 21