Writing expressions. We use variables in place of numbers that we don’t know. For example a number plus 5 is 35 – if I were to write this an equation.

Slides:

Advertisements

Similar presentations

Variables and Expressions

Advertisements

Pre-Algebra Chapter 1 Name Period.

Objective - To translate English words, phrases, and sentences into mathematical symbols, expressions, and equations respectively. _ + plus minus times.

Equalities Inequalities < Is less than = Equals- Is the same as

Intro to Algebra/Geometry Solving Equations by Adding or Subtracting.

Translating Word Phrases into Algebraic Expressions or Equations

Writing Variable Expressions SEI.3.AC.1SLE 1: Solve, with and without appropriate technology, multi-step equations and inequalities with rational coefficients.

Writing Expressions and Equations

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

1. 5 word prediction. Guess the meanings of the following words: Variable, expression, base, constant, & factor.

d. –9 R, Q, Z, W, N R, Q R, I R, Q, Z Algebra II.

1. How long does a car traveling at 70 mph take to travel 88 miles, in hours? 2. Solve the following equation for x. 2x – 7 = hours 4.

Chapter 2 Equations, Inequalities and Problem Solving.

Variables and Expressions 1-1 Vocabulary Variable – a letter used to represent unspecified numbers or values. Algebraic expression – consists of one.

Warm up Pick a number between Multiply by 8 Add 30 Minus 14

It’s Expression Time!! Making Algebraic and Verbal Expressions EASIER to Understand.

Objective 15 Word phrases to algebraic expressions ©2002 by R. Villar All Rights Reserved.

Algebraic Expressions

7 A&F 1.1 OBJECTIVE Use variables & operations to write an expression We LOVE Mathematical Language!!!

Writing Expressions and Equations. Key Vocabulary Expression – a math sentence without equal signs Equation – a math sentence with equal signs Variable.

Lesson 1-6/ 1-7 Writing Algebraic Expressions. To evaluate an expression, substitute a number for a variable Example 1: Evaluate 3n + 7 when n = 3.

Writing Algebraic Expressions. Word phrases can be written as algebraic expressions. Use the words to determine what operation you are using. Use a variable.

Divided by ÷ Quotient ÷ Separated into ÷ Times x Product x Twice x Multiplied by x Difference - Twice Separated into Multiplied by Quotient Product.

Translating Algebraic and Verbal Expressions. Warm Up Answer the following problems 1.(5+2-6) - (1-5+12) + (6-3+11)= 2.2(5-3) 2 + (15÷3x2) - (5+2 x 1-4)=

Expressions to Phrases “The Language of Math”. What is our purpose????? The purpose of this lesson is to provide a link between Language and Math. Through.

 Why is it important to understand the “language” of mathematics? CCCA Unit 1.

Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall. Chapter 2 Integers and Introduction to Variables.

Writing Algebraic Expressions Mini Lesson. Objective: Write and evaluate an algebraic expression for a given situation, using up to three variables.

Write as an Algebraic Expression The product of a number and 6 added to a.

TRANSLATING Word phrases to algebraic expressions.

A.A.1: Translate a quantitative

Algebraic Expressions and Terms. Expressions You are familiar with the following type of numerical expressions: (12) 6 (3 + 2) (6)

$100 $200 $300 $400 $100 $200 $300 $400 $300 $200 $100 Writing variable equations Find variables in addition equations Find variables in subtraction.

Pre-Algebra Chapter 1-1 Expressions and Variables.

EXPRESSIONS AND EQUATIONS USING NUMBERS AND WORDS.

3 + 6a The product of a number and 6 added to 3

Adding, Subtracting, Multiplying, and Dividing Rational Numbers.

3.1 WRITING EXPRESSIONS AND EQUATIONS.  Evaluate: Solve to get a numerical value.  Numerical expression: numbers and operations. Ex: – 4 Ex: 2.

Holt CA Course Evaluating Algebraic Expressions Preview 1-1 Evaluating Algebraic ExpressionsEvaluating Algebraic Expressions 1-2 Writing Algebraic.

Lesson 1.1 Expressions and Variables OBJ: To translate verbal phrases into expressions.

Algebraic Expressions and Terms By Aziz Elmrini By Aziz Elmrini.

1.3 Algebraic Expressions and Terms

Do Now Solve the equation. Underline key words. Why did you solve the problem the way you did? Mr. Waffle is a circus clown. He starts the day with sixty-four.

Words and Phrases to Math Symbols

Equations and The Order of Operations. Page  2 Section 1: Variables and Expressions  Variables –Are letters or symbols that act as placeholders for.

1. a) the product of 5 and a number x b) Evaluate when x = -1 2.a) 18 decreased by a number z b) Evaluate when z = a) the quotient of 16 and a number.

2 Chapter Chapter 2 Integers and Introduction to Variables.

Writing Algebraic Expressions

Words and Phrases to Math Symbols

Variables and Expressions

1. Write each rational number in lowest term (similar to p.48 #45-51)

Writing Equations from Words

Writing Expressions and Equations

Simplify Expressions 34 A number divided by 3 is 7. n ÷ 3 = 7.

Algebraic Expressions, Equations, and Symbols

In this lesson you will learn how to read and write algebraic expressions by using variables.

SECTION 1-1 : VARIABLES and EXPRESSIONS

Writing expression basic

ALGEBRA. ALGEBRA VARIABLES AND EXPRESSIONS Algebra – Uses symbols to represent quantities that are unknown or that vary. You can represent mathematical.

Algebraic expression to Verbal statement Basic

Section 1.1 Variables and Expressions

Algebra Stop Being Scared!!!.

Algebraic expression to verbal statement two terms

Adding integers Subtracting integers 2.4 Multiplying and

Variables and Expressions

Goal: The learner will write variable expressions and equations.

2-7 Variables and Expressions

Algebraic Expressions and Terms

Variables and Expressions

Translating verbal phrases into Algebraic Expressions.

Presentation transcript:

Writing expressions

We use variables in place of numbers that we don’t know. For example a number plus 5 is 35 – if I were to write this an equation I would write A+5 =35 I don’t know what the number 5 must be added to, so I call it a. You can use any letter you want.

Identifying key words First we need to be able to identify what words mean addition, subtraction..etc... Subtraction- difference, fewer, less, decreased Addition- increased, more, sum Multiplication- times, product, of Divide – quotient, divided, out of

examples Write an equation for each 1) a number increased by 3 is 45 2) The product of two numbers decreased by 7 is 34 3) 9 decreased by a number is -5

Word problems George has 7 more CD’s than Jean, together they have 56 CD’s