Math Example: Language of Math--Variable Expressions--Multiplication and Subtraction--Example 3

Topic

Variable Expressions

Description

This example demonstrates the conversion of the verbal statement "Subtract fifteen times more than a number from twelve" into the variable expression 12 - 15x or -15x + 12. It showcases how to interpret a more complex sentence structure and translate it into algebraic symbols, using x to represent "a number".

Variable expressions form the foundation of algebraic thinking, enabling the translation of real-world scenarios into mathematical language. This collection of examples guides students through the process of identifying key phrases that indicate specific operations and converting them into symbolic form. By engaging with these examples, students develop critical skills in mathematical interpretation and communication.

Encountering a variety of examples is crucial for students to fully comprehend the concept of variable expressions. Each example presents a unique scenario, challenging students to apply their understanding in different contexts. This diverse practice builds flexibility in thinking and reinforces the connection between verbal and symbolic representations of mathematical ideas.

Teacher Script: Excellent progress! This example is a bit trickier, but you've got the skills to handle it. Remember to read the entire sentence before starting your translation. The phrase "fifteen times more than a number" tells us to multiply 15 by our variable x. Then, we're subtracting this from 12. Can you see how this leads to our expression? Keep practicing with different sentence structures, and you'll become a pro at translating words 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.