Objective:

Symbols and Notations

In this lesson you will symbolically write simple expressions, equations, and inequalities to represent situations that involve variable quantities.

Vocabulary:

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• equation
• expression
• function
• interval
• pattern
• relationship
• rule
• sequence
• variable

Tips to Remember:

Expressions in Words Algebraic Expression the sum of two and six 2 + 6 the product of three fourths and 15 3/4 x 15 or .75 x 15 the sum of some number and 12 N + 12 the product of length and width L x W a number plus 5 the sum of a number and 5 a number increased by 5 five more than a number add five to a number N + 5 or 5 + N a number minus eight subtract 8 from a number 8 less than a number a number less 8 a number decreased by 8 N - 8 eight minus a number subtract a number from 8 8 less a number 8 decreased by a number 8 - N two times a number the product of two and a number twice a number 2 x M or M x 2 or 2(M) or 2*M six divided by a number a number divided into six 6/N or 6 N a number divided by six six divided into a number N/6 or N 6