Math Example: Language of Math--Numerical Expressions--Addition--Example 20

Topic

Numerical Expressions

Description

This example demonstrates the conversion of the phrase "Negative five more than nineteen" into a numerical expression. The image shows how this verbal statement translates to the expression 19 + (-5), highlighting 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.

Presenting multiple examples of numerical expressions with various phrasings helps students recognize patterns and nuances in mathematical language. This exposure enhances their ability to translate between verbal and symbolic representations of mathematical ideas, particularly when dealing with positive and negative numbers.

Teacher Script: Let's examine this example closely. 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 situation where we might use this kind of phrasing?

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