1. Warm-up September 14, 2017 Change to a decimal: 87% 7%
Change to a percent:
1.11
0.77
Change to a fraction (may be improper) and simplify:
110%
10%

2. Algebra
Can be summed up in 3 words:
Variables
Expressions
Equations

3. Algebra Variable – it represents a number, any number (F – 32) * 5/9 =
E = MC2

4. TERM – a number, a variable, or a product of numbers and variables
ALGEBRAIC EXPRESSION – a mathematical phrase involving at least one variable and sometimes numbers and operation symbols. No = sign!
COEFFICIENT – a number multiplied by a variable in an algebraic expression or equation.

5. VARIABLE – A letter or symbol used to represent a number.
CONSTANT – a quantity or term that does not change its value. It does not have a variable.
EVALUATE – to find the value of an expression by replacing each variable in the expression with numbers. (ie find the answer)

6. Rules of Equality Addition Subtraction Multiplication Division
DO THE SAME THING ON BOTH SIDES OF THE EQUAL SIGN.

7. Addition
A + 5
5 + A
B + 5 = 12
5 + B = 12
Use the Subtraction Rule of Equality

8. Subtraction H – 7 7 - H H – 7 = 2 7 – H = 2
Use the Addition Rule of Equality

9. Multiplication 5G G5 (very rarely used) 5G = 30
Use the Division Rule of Equality

10. Division
P/6
6/P
P/6 = 3
6/P = 3
Use the Multiplication Rule of Equality

11. One-step equations Y + 7 = 10 L – 6 = 2 4F = 20 M/5 = 4 24/N = 3
Remember your Rules of Equality