Multiplying Integers and Their Signs

This lesson explores the rules for multiplying integers by analyzing patterns. It begins with the basic rule that a positive times a positive is positive. The lesson then demonstrates that a positive times a negative is negative, and due to the commutative property, a negative times a positive is also negative. Finally, it shows that a negative times a negative is positive. The video concludes with a summary of these rules and explains how to determine the sign of a product when multiplying several integers, emphasizing that an odd number of negative factors results in a negative product, while an even number results in a positive product.

What is the result of multiplying two positive integers?

• Negative

• Zero

• Positive

• Undefined

If you multiply a positive integer by a negative integer, what is the result?

• Negative

• Positive

• Undefined

• Zero

According to the commutative property, what is true about the order of multiplication?

• The order only matters for negative numbers

• The order affects the product

• The order does not affect the product

• The order only matters for positive numbers

What is the result of multiplying a negative integer by a positive integer?

• Zero

• Negative

• Undefined

• Positive

What is the result of multiplying two negative integers?

• Negative

• Positive

• Undefined

• Zero

Which rule applies when multiplying integers with different signs?

• The product is undefined

• The product is zero

• The product is negative

• The product is positive

What is the result when multiplying an odd number of negative integers?

• Zero

• Positive

• Negative

• Undefined

What is the result when multiplying an even number of negative integers?

• Positive

• Negative

• Zero

• Undefined

How can you determine the sign of a product when multiplying several integers?

• By subtracting all integers

• By adding all integers

• By counting the number of negative integers

• By counting the number of positive integers

What is the product of two times three times one times four times two?

• Negative 48

• Positive 48

• Undefined

• Zero