Math Example: Language of Math--Variable Expressions--Multiplication and Subtraction--Example 12

Topic

Variable Expressions

Description

This example illustrates the conversion of the verbal statement "Take away seventeen times a number from negative two" into the variable expression -17x - 2. It demonstrates how to interpret phrases like "take away" and "times" when dealing with negative numbers, and translate them into algebraic operations, using x to represent "a number".

Variable expressions are a key concept in algebra, bridging the gap between everyday language and mathematical notation. This collection of examples guides students through the process of recognizing key phrases that indicate specific operations and translating them into symbolic form. By working through these examples, students develop crucial skills in mathematical interpretation and communication.

Exposure to multiple examples is essential for students to fully grasp the concept of variable expressions. Each example presents a slightly different scenario, helping students to recognize patterns and develop flexibility in their approach to translation. This repeated practice builds confidence and proficiency in a skill that is fundamental to more advanced algebraic concepts.

Teacher Script: Great job tackling this example! Notice how "take away seventeen times a number" translates to -17x. We're doing this operation from negative two, which gives us -17x - 2. Can you think of a real-world scenario where we might use this expression? Try creating your own word problem that would result in this expression. This practice will help you see the connection between math and everyday situations!

For a complete collection of math examples related to Variable Expressions click on this link: Math Examples: Variable Expressions: Multiplication and Subtraction Collection.