1. DO NOW Copy down your homework: 1-2 Lesson Check (Page 13)
Warm-up: Look at the glossary in the back of your book and define these words in the “Chapter 1 Vocabulary” section at the back of your notebook
5. Power
6. Exponent
7. Base
8. Simplify
9. Evaluate

2. HW

5. Table of contents 1 Page # topic date 5 Ch. 1 – Getting Ready 1/22/15
? Variables & Expressions 1/26/15
? Order of Operations & 1/27/15
Evaluating Expressions 1

6. page 10
HINT

7. VS

8. How do we read powers?
5. Power: The base and the exponent of an expression in the form an.
6. Exponent: A number that shows
repeated multiplication.
7. Base: A number that is
multiplied repeatedly.

9. How do we read powers? What do they mean to do?23

10. How do we read powers? What do they mean to do?52

11. How to simplify
8. Simplify: To replace an expression with its simplest form.
Simplify: 5 x 3 =

12. What is the simplified form of the expression?
(0.2)5

13. You Try!!!

14. Order of Operations

15. Please Excuse My Dear Aunt Sally
Also Known as P.E.M.D.A.S
Please Excuse My Dear Aunt Sally

16. P.E.M.D.A.S foldable Parentheses (and grouping symbols) Exponents
Multiply and
Divide from
Left to right
Add and
Subtract from
Left to right

17. P
parentheses E
exponents M D
multiply
divide A S
add
subtract

18. Example 𝟏𝟐 parentheses exponent divide 𝟏𝟕 −𝟐𝟓÷𝟓 subtract 𝟏𝟕 −𝟓
𝟏𝟕 − 𝟓 𝟐 ÷(𝟐+𝟑)
exponent
𝟏𝟕 − 𝟓 𝟐 ÷𝟓
divide
𝟏𝟕 −𝟐𝟓÷𝟓
subtract
𝟏𝟕 −𝟓 𝟏𝟐

19. Simplify:
2 4 −1 5
6−2 3 ÷2

20. You Try!!!

21. Evaluating Expressions

22. Evaluating Expressions
9. Evaluate: To substitute a given number for each variable and then simplify.
for x = 5 and y = 2
𝑥 2 +𝑥−12÷ 𝑦 2

23. Evaluating Expressions
𝑥𝑦 2
for x = 5 and y = 2

24. You Try!!!

26. You Try!!!