Math Example: Language of Math--Variable Expressions--Multiplication and Subtraction--Example 2

Topic

Variable Expressions

Description

This example illustrates the conversion of the verbal statement "Twenty times a number less fourteen" into the variable expression 20x - 14. It demonstrates how to identify multiplication and subtraction operations within a sentence and translate them into algebraic symbols, using x to represent "a number".

Variable expressions are a cornerstone of algebraic thinking, 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 a crucial skill in mathematical 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 that last example! Now, let's try another one. Remember, we're looking for words that tell us what operations to use. In this case, "times" means multiplication, and "less" indicates subtraction. Can you identify which part of the expression represents the number, and which parts represent the operations? Keep practicing, and you'll soon be able to translate any sentence into math!

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