1 / 9

Writing Expressions

Writing Expressions. Expressions vs. Equations. Expressions use numbers, number symbols and letters (variables) to explain a sentence. Equations are like expressions except they have an equal sign. examples. twelve divided by three 12 ÷ 3. Twenty increased by eleven 20 + 11.

bracha
Télécharger la présentation

Writing Expressions

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 Expressions

  2. Expressions vs. Equations • Expressions use numbers, number symbols and letters (variables) to explain a sentence. • Equations are like expressions except they have an equal sign.

  3. examples • twelve divided by three • 12 ÷ 3 • Twenty increased by eleven • 20 + 11 • Thirty-seven minus a number • 37 - n

  4. Real life problem • Joey mows lawns to make some extra money. He charges $21 for each lawn and an extra $2 per hour. Which expression should he use to find out how much to charge his customers? [A] 21 + h [B] 21 + 2·h [C] 21 + 2 [D] 21 – 2·h

  5. Translating words into symbols

  6. Example problems • Twelve pieces of candy equally shared by four friends • 12 ÷ 4 • The product of seven and four • 7 x 4 • The difference of Twenty and sixteen • 20 – 16 • y less than 18 times 6 • 18•6 – y

  7. Example problems • Seven decreased by five 7 – 5 • The product of four and nine 4 x 9 • The sum of a number and ten m + 10 • Eight more than a number c c + 8

  8. Example problems • The quotient of twenty and two 20 ÷ 2 • Five minus a number x 5 – x • Five less than a number x x – 5 • Eighteen equally shared by six 18 ÷ 6

  9. Example problems • Three times the sum of a number and 5 3 x (n + 5) • The quotient of m and 2 plus 7. (m ÷ 2) + 7 • four times the quantity of x minus 8 4 x (x – 8) • Eight more than the product of a number and 9 c + 8

More Related