Multiplying Negative Integers: Understanding Equal Groups

This lesson teaches how to multiply negative integers by using the concept of equal groups. It introduces models to represent positive and negative integers, such as zero pairs, and explains the use of a product box to visualize multiplication problems. Through examples, the lesson demonstrates how removing negative groups from a neutral field results in positive products, reinforcing the concept that multiplying two negative integers yields a positive result.

What is the result called in a multiplication problem?

• Difference

• Sum

• Product

• Factor

What does a zero pair represent in the models used for multiplication?

• A value of one

• A negative value

• A value of zero

• A positive value

How do you show negative groups in the product box?

• By removing positive numbers

• By adding zero pairs

• By adding positive numbers

• By removing negative numbers

What is the product of -5 times -3?

• -15

• 0

• 5

• 15

In the example of -7 times -2, what is the final result?

• -14

• 0

• 7

• 14