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Virtual School Gr7-CIC

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Warm Up - Simplify expression Evaluate expressions Algebra vocabulary

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Although they are closely related, a Great Dane weighs about 40 times as much as a Chihuahua

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An expression for the weight of the Great Dane could be 40c, where c is the weight of the Chihuahua.

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Although they are closely related, a Great Dane weighs about 40 times as much as a Chihuahua An expression for the weight of the Great Dane could be 40c, where c is the weight of the Chihuahua. When solving real-world problems, you will need to translate words, or verbal expressions, into algebraic expressions.

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Word phrases can be written as algebraic expressions.

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Use a variable for the phrase a number or unknown value.

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Word phrases can be written as algebraic expressions. Use the words to determine what operation you are using. Use a variable for the phrase a number or unknown value.

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In order to translate a word phrase into an algebraic expression, we must first know some key word phrases for the basic operations.

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In your notebook/notes: AdditionSubtraction MultiplicationDivision

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Addition Phrases: More than Increase by Greater than Add Total Plus Sum

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Subtraction Phrases: Decreased by Difference between Take Away Less Subtract Less than* Subtract from*

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Multiplication Phrases: Product Times Multiply Of Twice or double Triple

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Division Phrases: Quotient Divide Divided by Split equally

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Notes Multiplication expressions should be written in side- by-side form, with the number always in front of the variable. 3a 2t 1.5c 0.4f

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Notes Division expressions should be written using the fraction bar instead of the traditional division sign.

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Lets try it. 3 more than x

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Lets try it. the product of 3 and a number t

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Lets try it. the difference between 10 and a number y

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Lets try it. the quotient of 25 and a number b

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Lets try it. 32 less than 5 times c

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Independent Practice 1.2.5 divide g 2.4.2 times a number e 3.the sum of 10 and a number c 4.a number t decreased by 4 5.6 less than a number z 6.twice the number x 7.the number y divided by 2 8.a number n increased by 4.5

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WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable. (Lesson 1.1) 1.(8)(x) when x = 4 2.24/x when x = 3 3.x + 15.

WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable. (Lesson 1.1) 1.(8)(x) when x = 4 2.24/x when x = 3 3.x + 15.

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