Math Example: Language of Math--Variable Expressions--Multiplication and Subtraction--Example 14

Topic

Variable Expressions

Description

This example illustrates the conversion of the verbal statement "Sixteen times a number less negative fifteen" into the variable expression 16x - (-15). It demonstrates how to interpret phrases like "times" and "less" 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 on this example! Notice how "less negative fifteen" translates to subtracting a negative number. Remember, subtracting a negative is the same as adding a positive. Can you simplify this expression further? Try rewriting it without the negative sign inside the parentheses. Keep practicing with different word choices and negative numbers, and you'll become more comfortable with these translations and simplifications!

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