Writing Expressions and Equations

1. Writing Expressions and Equations 7th Grade 2012

2. Writing Expressions and Equations • Create 4 posters • Brainstorm • “Phrases that Indicate Addition” • “Phrases that Indicate Subtraction” • “Phrases that Indicate Multiplication” • “Phrases that Indicate Division”

3. Writing Expressions and Equations • Create separate poster: • “OF” means __________________ • “IS” means ___________________ • “A NUMBER” or “WHAT” means ______________

4. Writing Expressions and Equations • Write each phrase as an algebraic expression. • b plus 1 • Twelve minus y • Five years younger than Jessica • Four increased by a • The product of c and 10 • Three times as many soft drinks • Emily’s age divided by 3 • A number divided by 2

5. Writing Expressions and Equations • Write each sentence as an algebraic equation. • A number plus three is 9. • Four cents more than the price is 93¢. • A number decreased by 5 is 12 • A number times four is 20. • The product of z and 6 is 54. • 72 divided by y is -9. • One more than twice as many CDs is 17.

6. Writing Expressions and Equations • “Writing Colorful Expressions/Equations” • Each partner group will have a baggie of different colored papers that will include a mathematical phrase or number sentence. • Each partner will draw from the baggie and write the phrase or sentence on their form. • You create the expression or equation that means the same. • Put it back and draw a different color. • Continue until all colors have been drawn and completed by each partner. • Check your answers with each other.

7. Writing Expressions and Equations • Practice/Homework: • “Create Word Sentences and Equations” • In Class Practice • “3-1 Skills Practice” and “3-1 Practice” Glencoe • Homework • “Buckle Down” – Page 103-104