Math Example: Language of Math--Numerical Expressions--Multiplication--Example 3

Topic

Numerical Expressions

Description

This example illustrates how the phrase "Three by ten" is converted into the numerical expression 3 * 10. It demonstrates that the word "by" is often used to express dimensions and can indicate multiplication, especially when calculating area.

The topic of numerical expressions, particularly those involving multiplication, is fundamental in mathematics. This collection of examples helps students understand the various ways multiplication can be expressed in everyday language and how to translate these expressions into mathematical notation. By exploring different verbal representations of multiplication, students develop a more flexible understanding of the concept and improve their ability to interpret and create mathematical expressions.

Presenting multiple examples is crucial for students to fully grasp this concept. Each example showcases a different verbal representation of multiplication, allowing students to recognize patterns and similarities across various phrasings. This repetition and variety help reinforce the concept, enabling students to more easily identify and translate multiplication expressions in diverse contexts.

Teacher Script: "Let's look at another way to express multiplication. When we say 'Three by ten,' we're actually talking about multiplication. This phrase is often used when describing dimensions, like the size of a room. So 'Three by ten' becomes 3 * 10 in math language. Can you think of other situations where you might use 'by' to mean multiply? How would you write those as math expressions?"

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