Math Example: Language of Math--Numerical Expressions--Subtraction--Example 12

Topic

Numerical Expressions

Description

This example demonstrates converting the phrase "Three minus negative eight" into a numerical expression. The word "minus" indicates subtraction, resulting in the expression 3 - (-8).

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 expressions involving negatives, students understand how language affects 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, including handling negatives. This repetition strengthens pattern recognition and boosts confidence in interpreting statements correctly.

Teacher Script: "Let's look at another example with negative numbers. When we say 'Three minus negative eight,' we're actually adding eight because subtracting a negative is like adding a positive. So, we write this as 3 - (-8). Can you think of why this happens when we subtract negatives?"

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