Writing Algebraic Expressions Developed by Ivan Seneviratne Addition

Writing Algebraic Expressions Developed by Ivan Seneviratne

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 2

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

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

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

Write Algebraic Expressions for These Word Phrases • • • 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

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 8

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

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? 10

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. 11

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