Writing Algebraic Expressions Developed by Ivan Seneviratne

2 Addition n + 5 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

3 Subtraction x - 11 A number minus 11 Subtract 11 from a number The difference of a number and less than a number A number decreased by 11

4 Multiplication 3m 3 times a number 3 multiplied by number The product of 3 and a number

5 Division a/7 a ÷ 7 A number divided by 7 7 divided into a number The quotient of a number and 7

Ten more than a number A number decrease by 5 6 less than a number A number increased by 8 The sum of a number & 9 4 more than a number n + 10 w – 5 x – 6 n + 8 n + 9 y + 4 Write Algebraic Expressions for These Word Phrases

A number s plus 2 A number decrease by 1 31 less than a number A number b increased by 7 The sum of a number & 6 9 more than a number s + 2 k - 1 x - 31 b + 7 n + 6 z + 9

8 Write an algebraic expression ;for each word phrase. 7 more than a number y 6 times the sum of 4 and y 11 less than a number t Half the sum of m and 5 9 more than the product of 6 and a number y 2 less than a number m divided by 8 Twice the quotient of a number m and 35

Write an Algebraic Expression for These Situations Scott’s brother is 2 years younger than Scott The sum of two numbers is 12 The difference between two numbers is 5

10 Let’s try to write the algebraic expression and evaluate each word problem. Michael bought a card for 35 visits to a weight lifting club and began a routine workout. After y visits, he had y fewer than 35 visits remaining on his card. After 18 further visits, how many visits will he have left?

11 Try Again! In basketball game, players score 2 points for each field goal, 3 points for each three-point shot, and 1 point for each free throw made. Write an algebraic expression for the total score for a team that makes g field goals, t three-point shots, and f free throws.

12 Challenge: Write an expression for the sum of 1 and twice a number n.

This presentation is developed by Ivan Seneviratne © 2006 purely for personal use.