Writing Algebraic Expressions SWBAT WRITE ALGEBRAIC EXPRESSIONS USING

Writing Algebraic Expressions SWBAT WRITE ALGEBRAIC EXPRESSIONS USING GROUPING SYMBOLS AND THE PHRASE LESS THAN. SWBAT WRITE WRITTEN EXPRESSIONS FROM ALGEBRAIC EXPRESSIONS.

Algebraic→Written Algebraic Expression→ (x +2) · 5 ● How can we write this as a written expression? ● Let’s break it down into 2 parts. ● How could you write (x + 2) as a written expressions? ● The sum of a number and two. ● ● Make sure and say “a number” instead of “the sum of n and two” The word sum prompts you to add first. (It is telling us we need the answer). Next we combine the two parts: The sum of a number and two, times five.

Practice ● Write a written expression for (x + 4) ÷ 10 ● Write an algebraic expression for four times the difference of a number and 6

Carrie has 30 fewer dollars than her friend. Here is a written expression showing the amount of money Carrie has. 30 less than x Which of the following represents this? a. X – 30 b. 30 - x

Write an algebraic expression to match each written expression: 1. seven less than two times a number 2. the difference of a number and 9 divided by 4 3. the sum of a number and 6, times 3 4. nine more than the product of 2 and a number Write a written expression for each algebraic expression 1. 2 n + 8 2. 2(n+3) - 5 3. n - 10 4. 10 - n

Exit Ticket 1. Write an algebraic expression for three times the sum of a number and eight. 2. Write a written expression for the algebraic expression using less than: 9 – n 3. Write an algebraic expression for ten less than the sum of six and a number.