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

Topic

Numerical Expressions

Description

This example demonstrates the conversion of the phrase "Negative thirteen increased by negative eight" into a numerical expression. The image shows how this verbal statement translates to the expression -13 + (-8), emphasizing the interpretation of "increased by" when dealing with two negative numbers.

Understanding how to interpret phrases like "increased by" in the context of negative numbers is crucial for students' mathematical development. It helps them grasp the idea that increasing a negative number by another negative number results in a number further from zero on the negative side of the number line.

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 multiple negative numbers.

Teacher Script: Let's examine this example closely. We see the phrase "increased by" used with two negative numbers. How does this affect our understanding of the expression? Can you think of a real-world scenario where increasing by a negative amount might occur with already negative quantities?

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