Multiply and Divide Rational Numbers Positive Negative

When multiplying fractions you do what?

• KCF

• Find the least common denominator

• Multiply all of the numbers together

• Multiply top times top and bottom times bottom

What is the sign of:

the product of two positive numbers?

• Positive

• Negative

• Zero

Make sure your final answer is in simplest form.

A negative divided by a positive is a ________

• positive

• negative

Solve: -0.5(-2)(0.4)

• 0.4

• -40

• -0.4

• 4

1.3(-2.4)

• 3.12

• -3.12

• 0.312

• -0.312

Mathematical Equivalence

ON

-2(4.2) = ?

• -8.4

• 8.2

• -8.2

• 8.4

Is 18 x (-7) negative or positive?

• negative

• positive

Which of the following would be needed to multiply mixed numbers?

• simplify

• turn the mixed numbers into an improper fraction

• multiply numerators

• multiply denominators

• add numerators