Math Example: Language of Math--Numerical Expressions--Addition--Example 15

Topic

Numerical Expressions

Description

This example illustrates the conversion of the phrase "Negative twenty more than nine" into a numerical expression. The image demonstrates how this verbal statement translates to the expression 9 + (-20), emphasizing the interpretation of "more than" when dealing with negative numbers.

Understanding how to interpret phrases like "more than" in the context of negative numbers is crucial for students' mathematical development. It helps them grasp the counterintuitive idea that adding a negative number results in a decrease, which is essential for more advanced mathematical concepts.

Exposure to various examples of numerical expressions with negative numbers helps students become comfortable with these concepts. This repetition reinforces their understanding and improves their ability to apply these ideas in diverse mathematical situations.

Teacher Script: In this example, we see the phrase "more than" used with a negative number. How does this affect our understanding of the expression? Can you think of a real-world scenario where we might add a negative amount to a positive one?

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