1. 1-1 Variables & Expressions
Vocabulary:
- LETTER that stands for a #
Variable
Constant
Expression
- NUMBER that doesn’t change
- phrase using VARIABLES, NUMBERS, and OPERATIONS

2. Ex #1: Name the variable, constant and operation.
A. x + 5
B. 2m
D. 3a - 1

3. BRAINSTORM What KEYWORDS do you know for the four operations???
ADDITION
SUBTRACTION
MULTIPLICATION
DIVISION
Sheet

4. Ex #2: Write an expression for the word phrase.
A. the sum of twice a number and 7
B. eight less than y
C. half of g
D. six increased by w

5. YOU TRY! Name the variable, constant, and operation. 1. r – 9 2. 7y 3.
Write the expression for the word phrase.
4. the sum of p and 8
5. six more than c

6. HOMEWORK
p.7 #1
p.8 #32-37