Math Example: Language of Math--Numerical Expressions--Subtraction--Example 5

Topic

Numerical Expressions

Description

This example demonstrates how to convert the verbal statement "Ten from twenty" into a numerical expression. The word "from" indicates subtraction, and the order of the numbers is important. The resulting expression is 20 - 10.

Numerical expressions are a crucial concept in mathematics, bridging the gap between everyday language and mathematical notation. This collection of examples helps students learn to interpret various verbal phrases and convert them into precise mathematical expressions. By presenting different ways to express subtraction, including phrases like "from," students develop a comprehensive understanding of how language relates to mathematical operations and the importance of number order in subtraction.

Providing multiple worked-out examples is essential for students to fully grasp the concept of numerical expressions. Each example reinforces the idea that different verbal cues can represent the same mathematical operation, but may require careful attention to the order of numbers. This repetition helps students develop pattern recognition skills and build confidence in their ability to interpret and convert verbal statements into mathematical language accurately.

Teacher Script: "Let's look at another way to express subtraction. When we say 'Ten from twenty,' we're using the word 'from' to indicate subtraction. But we need to be careful about the order. 'From' tells us that twenty comes first in our expression. So, we write this as 20 - 10. Can you think of other situations where we might use 'from' to describe subtraction in everyday life?"

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