1 / 19

Writing Algebraic Expressions: Learn to Translate Word Phrases

Master how to convert word phrases to algebraic expressions using key operation phrases and examples for addition, subtraction, multiplication, and division. Understand the format for multiplication and division expressions and practice conversion with real-life scenarios.

nathalieh
Download Presentation

Writing Algebraic Expressions: Learn to Translate Word Phrases

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Writing Algebraic Expressions Objective: Be able to write an algebraic expression for a word phrase or write a word phrase for an expression.

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

  3. On the back of your notes:

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

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

  6. Multiplication Phrases: • Product • Times • Multiply • Of • Twice or double • Triple

  7. Division Phrases: • Quotient • Divide • Divided by • Split equally

  8. 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

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

  10. Turn around Phrases: • “Subtracted from…” • Ex: 3 subtracted from 10 10 - 3 • “Less than…” • Ex: 7 less than 14 14 – 7

  11. Examples • Addition phrases: • 3 more than x • the sum of 10 and a number c • a number n increased by 4.5

  12. Examples • Subtraction phrases: • a number t decreased by 4 • the difference between 10 and a number y • 6 less than a number z

  13. Examples • Multiplication phrases: • the product of 3 and a number t • twice the number x • 4.2 times a number e

  14. Examples • Division phrases: • the quotient of 25 and a number b • the number y divided by 2 • 2.5 divide g

  15. Examples • converting f feet into inches • a car travels at 75 mph for h hours • the area of a rectangle with a length of 10 and a width of w

  16. Examples • converting i inches into feet • the cost for tickets if you purchase 5 adult tickets at x dollars each • the cost for tickets if you purchase 3 children’s tickets at y dollars each

  17. Examples • the total cost for 5 adult tickets and 3 children’s tickets using the dollar amounts from the previous two problems (problems e and f)

  18. So, if I ask for you to write an expression: • Three times a number, x _______________ • Six less than a number, y ________________ • Four times the quantity of twelve plus a number, s _____________

  19. Let’s try to go backwards. You write an expression: • 3 - j _____________________ • 7(m – 2) ______________________ • 8 + w _________________________

More Related