Math Example: Language of Math--Numerical Expressions--Subtraction--Example 4

Topic

Numerical Expressions

Description

This example illustrates how to convert the verbal statement "Two subtracted from seventeen" into a numerical expression. The phrase "subtracted from" indicates subtraction, but it's important to note the order of the numbers. The result is the expression 17 - 2.

Numerical expressions are a fundamental concept in mathematics, serving as a bridge 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 "subtracted from," students develop a comprehensive understanding of how language relates to mathematical operations and the importance of number order in subtraction.

The importance of multiple worked-out examples cannot be overstated in helping students 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 aids in pattern recognition and builds confidence in students' ability to interpret and convert verbal statements into mathematical language accurately.

Teacher Script: "Now, let's look at a slightly trickier way to express subtraction. When we say 'Two subtracted from seventeen,' we need to be careful about the order. 'Subtracted from' tells us that seventeen comes first in our expression. So, we write this as 17 - 2. Can you think of why it's important to pay attention to word order when we're converting verbal statements to mathematical expressions?"

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