Math Example: Language of Math--Variable Expressions--Multiplication and Subtraction--Example 29

Topic

Variable Expressions

Description

This example illustrates the conversion of the verbal statement "Negative twelve multiplied by a number minus negative eleven" into the variable expression -12x - (-11). It demonstrates how to interpret multiplication and subtraction operations within a sentence, especially when dealing with negative numbers, and translate them into algebraic symbols, 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 complex example! Notice how "negative twelve multiplied by a number" becomes -12x. Then we subtract negative eleven, which is the same as adding positive eleven. Can you simplify this expression further? Try rewriting it without the double negative. Keep practicing with different combinations of operations and negative numbers to strengthen your translation and simplification skills!

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