Math Example: Language of Math--Numerical Expressions--Subtraction--Example 13

Topic

Numerical Expressions

Description

This example shows how to convert the phrase "Twenty less negative four" into a numerical expression. The word "less" indicates subtraction, resulting in the expression 20 - (-4).

Numerical expressions are crucial for translating everyday language into mathematical notation. This collection helps students learn to interpret various verbal phrases and convert them into accurate mathematical expressions. By exploring different ways to express subtraction, including handling negatives, students understand how language influences operations.

The significance of multiple worked-out examples lies in reinforcing concepts for students. Each example highlights that different verbal cues can represent the same operation, enhancing pattern recognition and boosting confidence in interpreting statements correctly.

Teacher Script: "Let's explore how we can express subtraction with negatives. When we say 'Twenty less negative four,' we're subtracting a negative, which is like adding a positive. So, we write this as 20 - (-4). Can you think of other phrases that mean the same thing?"

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