1-2 Writing Algebraic Expressions Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

Slides:



Advertisements
Similar presentations
Variables and Expressions
Advertisements

Pages Variables and Expressions Warm Up Lesson Presentation
Writing Algebraic Expressions
Translate Words into Math
Writing Algebraic Expressions
Equalities Inequalities < Is less than = Equals- Is the same as
Evaluating Algebraic Expressions 3-5Inequalities Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview.
Understanding Algebra Word Problems
Use variables and appropriate operations to write inequality.
Warm Up Divided by Difference More than Product Minus Sum
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.
Now, Let’s see if you learned anything!
Holt McDougal Algebra 1 Variables and Expressions Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Holt McDougal Algebra.
Variables and Expressions 1.3. Vocabulary Algebra: Branch of mathematics that uses symbols such as variables Variable: A letter or symbol used to represent.
Do these signs have a meaning? PeaceRecycle.
Course Algebraic Expressions Course Algebraic Expressions Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation.
Problem of the Day Evaluate each expression for x = x 2. 4x
Writing Algebraic Expressions 1.2 Pre-Algebra. Evaluate each expression for the given values of the variables. Which operation symbol goes with each word?
Variables and Expressions
Translating into Algebraic expressions
Holt CA Course 2 Writing Algebraic Expressions 1-2 AF1.1 Use variables and appropriate operations to write an expression, an equation, an inequality, or.
Today’s Plan: -Entry Task & Correct Homework -Words and Math -Practice Learning Target: -I will translate words into mathematical expressions, and mathematical.
Holt CA Course 2 Writing Algebraic Expressions 1-2 Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview.
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.
Bell Quiz.
Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Chapter 8 Real Numbers and Introduction to Algebra.
Notes Over 1.5 Write the phrase as a variable expression. Let x represent the number. 1. The sum of 1 and a number sum add switch 2. 4 less than a number.
Holt McDougal Algebra 1 Variables and Expressions Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Holt McDougal Algebra.
Bell Work8/19/14 Evaluate each expression for the replacement set.
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.
Variables and Expressions
TRANSLATING Word phrases to algebraic expressions.
A.A.1: Translate a quantitative
1-7 Translate Words into Math Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Warm Up (12 – 4) 2.2. How much will it cost to cut a log into eight pieces if cutting it into four pieces costs $12? 3. Write a verbal phrase.
1-2 Writing Algebraic Expressions Warm Up Evaluate each expression for the given values of the variables. Homework: Page 12 #11-31 all y –
Lesson 5.1/5.2 – Writing Expressions and Equations Write this TITLE down on your notes!!! 5.1 /5.2 Writing Expressions and Equations.
Warm Up Evaluate each expression for the given values of the variables. Which operation symbol goes with each word? 4. Sum5. Product 6. Quotient7. Difference.
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.
1.1 Expressions and Variables Skill Check Skill Check Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation.
ALGEBRA 1 Lesson 1-1 Warm-Up Are the following answers reasonable? Use estimation to determine why or why not
Holt CA Course 2 Writing Algebraic Expressions 1-2 Algebraic Expressions Essential Question How do verbal expressions translate to algebraic expressions?
Holt CA Course 1 1-6Writing Algebraic Expressions Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview.
2-2 Translating Between Words and Math Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson.
1-2 Writing Algebraic Expressions Warm Up Evaluate each expression for the given values of the variables. Which operation symbol goes with each word? 23.
Course Algebraic Expressions Course Algebraic Expressions Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation.
Variables and Expressions
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Warm-up: Copy the two charts below into your notebook
Variables and Expressions
Writing Algebraic Expressions
Warm Up Simplify each expression. 1. 3x + 2y – 5x – 2y
Variables and Expressions
Objective: write algebraic expressions
Using Variables ALGEBRA 1 LESSON 1-1
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Variables and Expressions
Learn to write algebraic expressions.
Warm Up Write an algebraic expression for each word phrase.
Translating into Algebraic expressions
Warm Up 1. 7x + 4 for x = y – 22 for y = 9
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Variables and Expressions
Writing Algebraic Expressions
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Presentation transcript:

1-2 Writing Algebraic Expressions Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes

1-2 Writing Algebraic Expressions Warm Up Evaluate each expression for the given values of the variables. Which operation symbol goes with each word?   – 4. Sum 5. Product 6. Quotient 7. Difference 1. 9y – 13 for y = n + 2p for n = 2 and p = x – y for x = 1 and y = 2

1-2 Writing Algebraic Expressions Problem of the Day Find a pair of numbers that fits the description. Their product is 221 and their sum is , 17

1-2 Writing Algebraic Expressions Learn to translate between algebraic expressions and word phrases.

1-2 Writing Algebraic Expressions a number plus 5 add 5 to a number sum of a number and 5 5 more than a number a number increased by 5 a number minus 11 subtract 11 from a number difference of a number and less than a number a number decreased by 11 3 times a number 3 multiplied by a number product of 3 and a number a number divided by 7 7 divided into a number quotient of a number and 7 + –   Word Phrases Expression n + 5 x – 11 3m3m or a  7 a 7

1-2 Writing Algebraic Expressions Write an algebraic expression for each word phrase. Additional Example 1: Translating Word Phrases into Math Expressions A. 9 less than a number w 9 less than a number w w – 9 B. 3 increased by the difference of p and 5 3 increased by the difference of p and (p – 5) 3 + p – 5

1-2 Writing Algebraic Expressions Write an algebraic expression for each word phrase. Check It Out: Example 1 A. the sum of a number h and 88 minus 4 the sum of h and 88 minus 4 h + 88 – 4 B. the quotient of a number f and 6 quotient of f and 6 f  6 f 6

1-2 Writing Algebraic Expressions Write a word phrase for the algebraic expression 9 – 3c. Additional Example 2: Translating Math Expressions into Word Phrases 9 – 3c 9 minus the product of 3 and c 9 minus the product of 3 and c.

1-2 Writing Algebraic Expressions Check It Out: Example 2 Write a word phrase for the algebraic expression b b 7 plus the product of 19 and b 7 plus the product of 19 and b.

1-2 Writing Algebraic Expressions To solve a word problem, first interpret the action you need to perform and then choose the correct operation for that action.

1-2 Writing Algebraic Expressions A restaurant leased its banquet hall for a function. The cost was $10 per person. Write an algebraic expression to evaluate what the cost would be if 20, 21, 22, or 23 people attended the function. Additional Example 3: Writing and Evaluating Expressions in Word Problems $10 dollars nCombine n equal amounts of $10. $10nIn dollars 20 $10 20 $ $10 21 $ $10 22 $ $10 23 $230 n $10 n Cost Evaluate for n = 20, 21, 22, and 23.

1-2 Writing Algebraic Expressions Gasoline costs $3.59 per n gallons. What will the cost be for 10, 12, 14, and 15 gallons? Check It Out: Example 3 $3.59 nCombine n equal amounts of $3.59. $3.59nIn dollars 10 $ $ $ $ $ $ $ $53.85 n $3.59 n Cost Evaluate for n = 10, 12, 14, and 15.

1-2 Writing Algebraic Expressions Write a word problem that can be evaluated by the algebraic expression 27 + t, and evaluate the expression for t = Additional Example 4: Writing a Word Problem from a Math Expression Possible Answer: Amed bought a new sweater for $27 plus sales tax t. If the tax was $1.76, what was the total cost of the sweater? 27 + t = Substitute 1.76 for t. The total cost of the sweater was $28.76.

1-2 Writing Algebraic Expressions Write a word problem that can be evaluated by the algebraic expression 43 – d, and evaluate the expression for d = Check It Out: Example 4 Possible Answer: Tina bought a new jacket for $43 minus a store credit. If the store credit was $10.24, what was the total cost of the jacket? 43 – d 43 – = Substitute for t. The total cost of the jacket was $32.76.

1-2 Writing Algebraic Expressions Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems

1-2 Writing Algebraic Expressions Lesson Quiz Write an algebraic expression for each word phrase less than a number k 2. a number x divided by times the sum of n and 5 Write an algebraic expression to evaluate the word problem. 4. Karen buys n raffle tickets for $0.50 each. If she buys 13 of them, how much will they cost? k – 5 4(n + 5) 0.50n; $6.50 x 11

1-2 Writing Algebraic Expressions Lesson Quiz for Student Response Systems 1.Identify the algebraic expression for the given word phrase. 20 less than a number r A. 20 – r B. r – 20 C. 20r – r D. 20 – 20r

1-2 Writing Algebraic Expressions 2. Identify the algebraic expression for the given word phrase. a number p divided by 16 Lesson Quiz for Student Response Systems 16p p p 16 A. B. 16 p C. p 16p D.

1-2 Writing Algebraic Expressions Lesson Quiz for Student Response Systems 3. Identify the algebraic expression for the given word phrase. 6 times the sum of r and 9 A. 6 + r + 9 B. 6r + 9 C. r(6 + 9) D. 6(r + 9)

1-2 Writing Algebraic Expressions Lesson Quiz for Student Response Systems 4. Identify the algebraic expression that evaluates the given word problem. Alice buys x apples for $0.75 each. If she buys 24 of them, how much will they cost? A. 0.75x; $9 B. 24x; $9 C. 0.75x; $18 D. 24x; $18