1.1.variables.expressions

1.1.variables.expressions - Vocabulary...

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Variables and Expressions

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Vocabulary Variable  – A symbol, usually a letter of the alphabet, such as the  letter n, that is used to represent a number. Variable expression (A.K.A. - Algebraic Expression)  – An  expression, such as n – 5, that consists of one or more numbers  and variables along with one or more arithmetic operations.  (Note: No equal sign)   Evaluate a Variable Expression  – write the expression,  substitute a number for each variable, and simplify the result.
How Do You Describe a  Variable Expression? Variable  Expression Meaning Operation 5x, 5 x, (5) (x) 5 times x x x 5 5 , ÷ x divided by 5 Multiplication Division x + 5 Addition x - 5 x minus 5 x plus 5 Subtraction

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State the meaning of the  variable expression and name  the operation                    A A A x - 8 1. w 2 2. n 7 3. p 6 4. + A Please click to bypass answer slide
Answer: State the meaning of the variable expression  and name the operation 1. 8 minus x; Subtraction 2. 2 times w; Multiplication 3. 7 divided by n; Division 4. 6 plus p; Addition You must click on the answer to return to the previous slide Click in the middle of the window to view each answer

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Examples: 7 . 1 - b a k r 4 . 2 × z xy 3 5 . 3 ÷ Algebraic Expressions **Verbal expression a divided by b; minus 7 (note: fractions are division problems)

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