Math Example: Language of Math--Numerical Expressions--Multiplication--Example 14

Topic

Numerical Expressions

Description

This example demonstrates how to convert the phrase "Negative three groups of ten" into a numerical expression. The term "groups of" indicates multiplication, with the number on the right being multiplied by the number on the left. In this case, it translates to the expression 10 * (-3), introducing the concept of multiplying a positive number by a negative one.

Numerical expressions are a crucial concept in mathematics, bridging the gap between verbal descriptions and mathematical operations. This collection of examples helps teach the topic by presenting various ways multiplication can be expressed in everyday language, including cases with negative numbers. Students learn to recognize key phrases and translate them into mathematical symbols, while also understanding the rules for multiplying positive and negative numbers.

Exposure to multiple worked-out examples is essential for students to fully grasp the concept of numerical expressions, particularly when dealing with positive and negative numbers. Each example reinforces the core principles while introducing subtle variations, helping students develop a comprehensive understanding of how language can represent mathematical operations. This approach enhances pattern recognition skills and builds overall mathematical proficiency.

Teacher Script: "In this example, we see the phrase 'groups of' which indicates multiplication. Notice that the negative sign is with the number of groups, not the size of each group. This affects how we write our expression. Can you think of a real-life scenario where you might have negative groups of something?"

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