Learn to identify and evaluate expressions.

Slides:

Advertisements

Similar presentations

Algebra: Variables and Expressions variable A variable is a letter or symbol that represents an unknown quantity (a number). ALGEBRA. The branch of mathematics.

Advertisements

Section 1-5 Algebra: Variables and Expressions. Vocabulary Algebra: Is a language of symbols, including variables Variable: Is a symbol, usually a letter,

Algebraic Expressions. Definitions Variable – A variable is a letter or symbol that represents a number (unknown quantity). 8 + n = 12.

VARIABLES AND EXPRESSIONS NUMERICAL EXPRESSION A NAME FOR A NUMBER VARIABLE OR ALGEBRAIC EXPRESSION AN EXPRESSION THAT CONTAINS AT LEAST ONE VARIABLE.

Variables and Expressions

1.1 Lesson – Evaluating Algebraic Expressions

1.2 – Evaluate and Simplify Algebraic Expressions A numerical expression consists of numbers, operations, and grouping symbols. An expression formed by.

Algebraic Expressions. Definitions Variable – A variable is a letter or symbol that represents a number (unknown quantity). 8 + n = 12.

Unit 8 Lesson 1 (U8L1) PS 5-1: Solve and verify word problems using a mathematical expression Variables & Algebraic Expressions.

Class Starter pg. 5. Vocabulary Variable Algebraic expression Numerical expression.

Course 1 Warm Up Lesson Presentation Lesson Presentation Problem of the Day 2-1 Variables and Expressions Course 1.

2-1 Variables and Expressions Learn to identify and evaluate expressions.

EXPRESSIONS. Vocabulary A variable is a symbol, usually a letter, used to represent a number. –Example: 4x (x is the variable) A coefficient is the number.

Variables and Algebraic Expressions 1-3. Vocabulary Variable- a letter represents a number that can vary. Constant- a number that does not change. Algebraic.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Evaluation Solving Equations by Inspection

Unit 3 Vocabulary EXPRESSIONS. Algebraic Expression.

Objective 16 Evaluate algebraic expressions, given values ©2002 by R. Villar All Rights Reserved.

Substituting into expressions.

Warm Up Simplify.  3   15  (9 + 2)  7  5

2-1 Variables and Expressions Course 1 6 th Grade Math HW: Page 50 #5-17 all.

1-1 Patterns and Expressions Goal: Identify and Describe Patterns Honors Algebra II.

ALGEBRA VOCABULARY. Vocabulary: Expression Definition: A math phrase built from constants, variables and operations EXAMPLE: 3X - 2Y.

2-1 Variables and Expressions Course 1 Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day 2-1 Variables and Expressions Course.

Variables and Expressions #4. A variable is a letter or symbol that represents a quantity that can change. A constant is a quantity that does not change.

2-2 Variables and Expressions Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

Vocabulary Variable Constant Algebraic Expression Evaluate.

2-1 Variables and Expressions Course 1 Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day 2-1 Variables and Expressions Course.

2-2 Variables and Expressions Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

Learn to evaluate algebraic expressions.. Vocabulary variable constant algebraic expression evaluate.

VARIABLES AND EXPRESSIONS. Definitions: Algebra – Is a language of symbols, including variables. Variable - Is a letter or symbol that represents a quantity.

Essential Question: How do we Evaluate Algebraic Expressions? (+ & -) U3D4.

Essential Question: How do we Evaluate Algebraic Expressions? (● & /) U3D5.

Do Now 9/15/11 Take out HW from last night. Take out HW from last night.  Text p. 17, #1-4 Copy HW in your planner. Copy HW in your planner.  Text p.

1.1 Variables and Equations Objective: To Simplify numerical expressions and evaluate algebraic expressions.

1-5 Equations Goals: Solve equations with one variable

Tools for Algebra Vocabulary

Variables and Expressions

Algebraic Expressions

Algebra By Monica Yuskaitis.

3.1 Simplifying Algebraic Expressions

L1-6 Notes: Algebra: Variables and Expressions

Algebraic Expressions and Substitutions

Unit 3 Vocabulary expressions.

Creating Pattern Rules from Models

Algebraic Expressions

Variables and Expressions

Algebraic Expressions

Evaluating Algebraic Expressions

A mathematical phase containing numbers.

Algebra: Variables and Expressions

A mathematical phase containing numbers.

Definitions Variable – A variable is a letter or symbol that represents a number (unknown quantity). 8 + n = 12.

Algebra I By Monica Yuskaitis.

Algebraic Expressions

Algebra Substitution a = 3 ; b = 4 and c = -1 2a + c b2 – a2 2b2

Variables and Expressions

Evaluating Algebraic Expressions

= Today’s Objective To be able to evaluate variable expressions

Do Now 9/18/12 Take out HW from last night. Copy HW in your planner.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Algebra I By Monica Yuskaitis.

Evaluating an expression with two variable

Evaluating an expression with one variable

Entry #14 Algebra January 17, 2008

Presentation transcript:

Learn to identify and evaluate expressions.

Vocabulary variable constant algebraic expression

A variable is a letter or symbol that represents a quantity that can change. A constant is a quantity that does not change.

Algebraic Expressions NOT Algebraic Expressions An algebraic expression contains one or more variables and may contain operation symbols. So p  7 is an algebraic expression. Algebraic Expressions NOT Algebraic Expressions 150 + y 85 ÷ 5 35  w + z 10 + 3  5 To evaluate an algebraic expression, substitute a number for the variable and then find the value.

Additional Example 1A: Evaluating Algebraic Expressions Evaluate the expression to find the missing values in the table. y 5  y 6 7 10 30 Substitute for y in 5  y. y = 6; 5  6 = 30 y = 7; 5 x 7= 35 35 50 y = 10; 5  10 = 50 The missing values are 35 and 50.

Additional Example 1B: Evaluating Algebraic Expressions Evaluate the expression to find the missing values in the table. z z  5 20 45 60 4 Substitute for z in z  5. z = 20; 20  5 = 4 9 z = 45; __  5 = __ 45 9 12 z = 60; __  5 = __ 60 12 The missing values are 9 and 12.