Math Example: Language of Math--Numerical Expressions--Subtraction--Example 40

Topic

Numerical Expressions

Description

This example shows how to convert "Negative fifteen from negative nineteen" into a numerical expression. The word "from" indicates subtraction, leading to the expression -19 - (-15).

Numerical expressions are vital for translating everyday language into mathematical notation. This collection helps students learn how to interpret various verbal phrases and convert them into accurate mathematical expressions. By exploring different ways to express subtraction, such as using "from," students understand how language affects operations.

The significance of multiple worked-out examples lies in reinforcing concepts for students. Each example highlights that different verbal cues can represent the same operation, enhancing pattern recognition and boosting confidence in interpreting statements correctly.

Teacher Script: "Let's examine how 'from' indicates subtraction with negatives. When we say 'Negative fifteen from negative nineteen,' we're subtracting a negative number, which is like adding a positive one. So, we write this as -19 - (-15). Can you think of other phrases that mean the same thing?"

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