1. 8-22-12 Please have the following on your desk: Name Tag
Lined paper – write your heading in the top right hand corner.
Pencil
Pre-Algebra book
Math Letter signed slip

2. CHAPTER 1
1-1: Variables AND Expressions p.4

3. VARIABLES AND EXPRESSIONS
VARIABLE: a letter that represents a number in an algebraic expression. Examples: c y x a 3

4. VARIABLES AND EXPRESSIONS
VARIABLE: a letter that represents a number in an algebraic expression. Examples: c y x a
NUMERICAL EXPRESSION: an expression with only numbers Examples: – 32 4

5. VARIABLES AND EXPRESSIONS
VARIABLE: a letter that represents a number in an algebraic expression. Examples: c y x a
NUMERICAL EXPRESSION: an expression with only numbers Examples: – 32
VARIABLE EXPRESSION: an expression with variables in it Examples: 8 + r 3y 6ab – 4d 5

6. EXAMPLES 50 – 5 Numerical expression because there are only numbers.
c – 5 Variable expression because there is a variable.

7. Writing Variable Expressions
Write an expression for the following:
The number of months in 2 years 2 (12)
The number of cents in 6 dimes 6 (10)

8. TRY THIS Identify as a numerical expression or variable expression:
100(6)
D + 43 – 9

9. TRY THIS Identify as a numerical expression or variable expression:
100 (6)
D + 43 – 9
Variable expression
Numeric expression

10. TRY THIS Write an expression for the number of eggs in 5 dozen
Write an expression for the number of feet in r yards

11. TRY THIS Write an expression for the number of eggs in 5 dozen
Write an expression for the number of feet in r yards
5 (12) 3r

12. Agenda:
P. 6-7
#11-35 odd due Friday.
Return Math letter

13. Please have out the following:
Please have out the following:
Math book
PP. 6/7 HW
Red pen
Multiplication Race (if not turned in earlier this week)

14. Fruit for Thought due Tuesday. Multiplication Race by Tuesday.
Agenda
Fruit for Thought due Tuesday.
Multiplication Race by Tuesday.