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

Slides:



Advertisements
Similar presentations
7.1Variable Notation.
Advertisements

Basic Algebra Grade: 9 th Gustavo Miranda LRC 320.
Algebra: Variables and Expressions variable A variable is a letter or symbol that represents an unknown quantity (a number). ALGEBRA. The branch of mathematics.
Algebraic Expressions. Definitions Variable – A variable is a letter or symbol that represents a number (unknown quantity). 8 + n = 12.
Variables and 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.
REFLECT.
Chapter 1: The Language of Algebra You will learn: To use variables to represent unknown quantities Words to Learn: Variables: letters used to ______________.
Class Starter pg. 5. Vocabulary Variable Algebraic expression Numerical expression.
Vocabulary... First, we need to know some vocabulary…  Expression: a mathematical phrase that is a combination of one or more variables, constants, and.
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.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Lesson 1.1 Using Variables. 1.1 – Using Variables Goals / “I can…” Model relationships with variables Model relationships with equations.
Adding and Subtracting Expressions
Chapter 1: Variables in Algebra
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.
Variable: Is a quantity that can change or vary. Mathematicians use letters to represent variables. Constant: A quantity that does not change x.
Unit 2 Expressions and Equations Combine like terms.
ALGEBRA VOCABULARY. Vocabulary: Expression Definition: A math phrase built from constants, variables and operations EXAMPLE: 3X - 2Y.
Equivalent Expressions 6.7. Term When addition or subtraction signs separate an algebraic expression in to parts, each part is called a term.
Warm-Up Activity Fold your notecard lengthwise Write your name (in large letters) on blank side so it can be on your desk On the lined side of the notecard,
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.
Combining Like Terms and the Distributive Property Objectives: Students will be able to explain the difference between algebraic equations and expressions.
 To evaluate algebraic expressions  To simplify algebraic expressions Algebra 2 Foundations, pg 18.
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.
Variable and Expressions. Variables and Expressions Aim: – To translate between words and algebraic expressions. -- To evaluate algebraic expressions.
Essential Question: How do we Evaluate Algebraic Expressions? (+ & -) U3D4.
Algebraic Expressions 1. Objective: Translate among different representations of algebraic expressions, equations and inequalities Essential Question:
Notes Over 1.2.
Objective: SWBAT simplify expressions by combining like-terms.
Parts of an Expression.
Rational and Irrational Numbers
Algebra.
Tools for Algebra Vocabulary
Variables and Expressions
Introduction to Algebra
I can identify parts of an expression using mathematical terms.
How do you model relationships with variables and equations?
Algebraic Expressions
Warm-up September 14, 2017 Change to a decimal: 87% 7%
3.1 Simplifying Algebraic Expressions
6.1 Algebraic Expressions & Formulas
Unit 2 Expressions and Equations
L1-6 Notes: Algebra: Variables and Expressions
Unit 2 Expressions and Equations
Algebra Vocabulary.
Algebraic Expressions and Substitutions
Unit 3 Vocabulary expressions.
Variables and Expressions
Chapter 1-1 Variables and expressions
A symbol, usually a letter, that represents one or more numbers
Evaluating Algebraic Expressions
A mathematical phase containing numbers.
Algebra: Variables and Expressions
A mathematical phase containing numbers.
Chapter Four Vocabulary
Algebraic Expression A number sentence without an equal sign. It will have at least two terms and one operations.
Algebra: Variables and Expressions
Learn to identify and evaluate expressions.
Evaluating Algebraic Expressions
Simplify Algebraic Expressions
Algebraic Expressions
Algebraic Expressions & Solving Equations
Presentation transcript:

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

Variable: Is a quantity that can change or vary. Mathematicians use letters to represent variables. Constant: A quantity (number) that does not change. 2w - 4 Expression: Is a mathematical phrase involving constants, variables, and operation symbols. (no equal signs) Vocabulary

Steps to Evaluate Expressions Step 1: Identify the variable. (Letter) w Step 2: Put parentheses around the variable. 2(w) - 4 Step 3: Plug in the number for the variable. 2(3) - 4 Step 4: Evaluate (simplify) is 2 2w -4, When w is 3

x 4x Evaluate each expression for x=6, 7, and 8. 4(x) - 5 4(6) - 5 4(7) - 5 4(8) Step 1: Identify the variable: X Step 3: Step 2: Step 4: Example 1:

y 12/y Evaluate each expression for y=2, 4, and 6. Step 1: Identify the variable: Step 2: Step 3:Step 4: y 12/(y) /(2) /(4) /(6) Example 2:

xx² + 12x18/x Evaluate each expression for x=1, 2, and 3. (x)² + 1, 2(x), 18/(x) (1)² + 1 Step 1: x Step 2: (2)² (3)² (1) 2 2(2) 4 2(3) 6 18/(1) 18 18/(2) 9 18/(3) 6 Example 3:

Evaluate each expression x= 3, x 2. 15/x X=3 x=3 X=5 x= /x 4. -3x X=3 x=3 X=5 x=5

Evaluate each expression for n = n – 7 2.5(3n + 2n) 3.12 ● n/3

Summary Write an example of: How do we Evaluate Algebraic Expressions? (● & /)