Math Example: Language of Math--Numerical Expressions--Addition--Example 17

Topic

Numerical Expressions

Description

This example illustrates the conversion of the phrase "Fifteen increased by negative four" into a numerical expression. The image demonstrates how this verbal statement translates to the expression 15 + (-4), emphasizing the interpretation of "increased by" when dealing with 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 counterintuitive idea that increasing by a negative amount actually 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 "increased by" used with a negative number. 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?

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