Writing Algebraic Expressions Mini Lesson

Objective: Write and evaluate an algebraic expression for a given situation, using up to three variables

OperationVerbal ExpressionsAlgebraic Expression add 3 to a number a number plus 3 the sum of a number and 3 3 more than a number a number increased by 3 n + 3 subtract 12 from a number a number minus 12 the difference of a number and less than a number a number decreased by 12 take away 12 from a number a number less 12 X – 12

OperationVerbal ExpressionsAlgebraic Expression 2 times a number 2 multiplied by a number the product of 2 and a number 2m or 2m 6 divided into a number a number divided by 6 the quotient of a number and 6 a ÷ 6 or a/6

1.A product of 20 and t 20t 2.24 less than a number n – times the sum of a number and 2 4(w + 2)

Examples: 1.the product of 7 and p 2.3 less than a number 3.12 divided into a number 4.3 times the sum of a number and 5 5.The sum of 5 and a number 6.2 less than a number 7.The quotient of a number and times a number 9.10 less than the product of a number and 3