Math Example: Language of Math--Numerical Expressions--Multiplication--Example 39

Topic

Numerical Expressions

Description

This example illustrates the conversion of the phrase "Negative eleven groups of negative twelve" into a numerical expression. The image uses visual cues to show how the verbal statement translates into mathematical symbols, resulting in the expression -12 * (-11). This example highlights the importance of understanding the order of multiplication when dealing with negative numbers.

Numerical expressions form the foundation for more complex mathematical concepts. This collection of examples helps students develop the critical skill of interpreting verbal statements and converting them into precise mathematical notation. By presenting various phrases that indicate multiplication, such as "groups of," students learn to recognize and accurately translate these expressions.

Providing multiple worked-out examples is essential for students to internalize the concept of numerical expressions fully. Each example offers a unique perspective on how multiplication can be expressed verbally, reinforcing the patterns and rules governing these conversions. This repetition helps students build confidence in their ability to interpret and construct numerical expressions independently.

Teacher Script: "Now, let's examine this example. The phrase 'Negative eleven groups of negative twelve' might seem tricky, but we can break it down. 'Groups of' tells us we're multiplying, and the order matters. We write -12 first, then multiply it by -11. Can you explain why we write it as -12 * (-11) instead of -11 * (-12)? Both are correct, but which one matches the original phrase more closely?"

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