Math Example: Language of Math--Numerical Expressions--Subtraction--Example 32

Topic

Numerical Expressions

Description

This example illustrates converting "Negative fifteen minus negative nine" into a numerical expression. The word "minus" indicates subtraction, resulting in the expression -15 - (-9).

Understanding numerical expressions is essential as they connect everyday language with mathematical notation. This collection aids students in interpreting various verbal phrases and converting them into precise mathematical expressions. By exploring expressions involving negative numbers, students gain insight into how language influences mathematical operations.

The importance of multiple worked-out examples cannot be overstated in helping students fully grasp numerical expressions. Each example reinforces that different verbal cues can signal the same operation, including handling negatives. This repetition enhances pattern recognition and builds confidence in converting verbal statements accurately.

Teacher Script: "Let's look at an example with negatives. When we say 'Negative fifteen minus negative nine,' we're subtracting a negative number, which is like adding a positive one. So, we write this as -15 - (-9). Why do you think it's important to recognize 'minus' as an addition cue?"

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