1. Unit 6 vocabulary Test over words next week, it will benefit you to study and understand what there words mean.

2. Vocab words 1. Associative Property 2. Commutative Property 3. Solution 4. Solve 5. Inequality 6. Variable 7. Term 8. Equation 9. Algebraic Expression 10. Numerical Expression 11. Distributive Property 12. Coefficient

3. Associative Property (Grouping)- Changing the grouping of the numbers does not change the sum or product Examples: 1) (2 x 3) x 4 = 24 which is equivalent to 2 x (3 x 4) =24 2) 10 x ( 3 x 4) which is equivalent to (10 x 3) x 4

4. Distributive property Example:  5(6 + 8) = (5 × 6) + (5 × 8)  a × (b + c) = (a × b) + (a × c) and  a × (b – c) = (a × b) – (a × c), where a, b, and c stand for any real numbers.  The product of a number and the sum of two numbers is the same as the sum of the number multiplied by each of the other numbers.

5. Commutative Property  (Order Property) Changing the order of the addends or factors does not change the sum or product.  Examples 7 + 3 = 10 which is equivalent to 3 + 7 = 10 25 x 4 = which is equivalent to 4 x 25

6. Numerical Expression  The term “numerical” means “involving numbers” and the term “expression” means “phrase”. A numerical expression is a mathematical phrase involving only numbers and one or more operational symbols.  Examples  4 + 20 – 7  (2 + 3) – 7  (6 × 2) ÷ 20  5 ÷ (20 × 3)

7. Algebraic Expression

8. Equation  Two things are the same using mathematical symbols.  Everything on one side of an equal sign (=) have to be equal to everything on the other side.  Examples  8 + 4 = 12  4 x 5 = 20  7 +10 – 5 = 12

9. Term  In Algebra a term is either: * a single number, or * a variable, or * numbers and variables multiplied together.

10. Variable  is a symbol for a number we don't know yet. It is usually a letter like x or y, however it can be represented by any letter.  Examples  x + 3  3x – y

11. Coefficient  A number used to multiply a variable  The numerical part of an algebraic term  Examples

12. Inequality  Two values are not equal  Example  a ≠b says that a is NOT equal to b

13. Solution  In an equation, it is an answer that can be substituted for a variable that makes the equation true.  Example  5x + 3= 12  - 3 = +3  5x = 15  5 = 5  X = 3

14. Solve  To work out a correct solution

15. Homework #12  Finish your definition on the vocab sheet  Make flash cards  One side has definition and your own example  Do NOT write the word with the definition  The other side has only the word  Must be use clear handwriting