Multiplying Rational Numbers with Signs

The video tutorial explains how to multiply rational numbers with the same sign, emphasizing that the product is positive when both factors are either positive or negative. It demonstrates using a number line to visualize multiplication and discusses the role of absolute values in determining the product's sign. The tutorial provides examples of equations with different sign combinations and concludes with a brief introduction to multiplying more than two rational numbers.

What is the product of two positive rational numbers?

• Positive

• Zero

• Negative

• Undefined

If both factors are negative, what will be the sign of the product?

• Negative

• Undefined

• Positive

• Zero

What is the result of multiplying two rational numbers with the same sign?

• Undefined

• Zero

• Positive

• Negative

How can a number line be used in multiplying rational numbers?

• To add numbers

• To find the product of numbers with like signs

• To subtract numbers

• To divide numbers

What is the first step in using a number line to multiply -4 and -1.5?

• Find the product of -4 and -1.5

• Find the product of 4 and 1.5

• Find the product of 4 and -1.5

• Find the product of -4 and 1.5

What is the result of multiplying a positive number by a negative number using a number line?

• Positive

• Undefined

• Negative

• Zero

What is the opposite of a negative product when using a number line?

• Negative

• Undefined

• Positive

• Zero

How do you determine the sign of the product when multiplying two negative numbers?

• The product is positive

• The product is negative

• The product is undefined

• The product is zero

What is the result of multiplying -2 and -1.75 using a number line?

• Negative 1.75

• Zero

• Positive 3.5

• Negative 3.5

What is the significance of having an even number of negative factors?

• The product is positive

• The product is undefined

• The product is negative

• The product is zero