Multiply and Divide Rational Numbers

How do you divide fractions?

• keep, change, change
• keep, change, flip
• divide numerators and denominators
• you don't

-7 x (-3)

• 21
• -21
• 10
• -10

-3.8 x 4

• 1.52
• 15.2
• 7.08
• -15.2

⅚ x (-½)

• -5/3
• 5/12
• -5/12
• 5/3

Tags

CCSS.7.NS.A.2A

6.2 x (-0.7)

• 4.34
• -43.4
• -4.34
• 434

-9 x (-11)

• 20
• -99
• 99
• -20

A negative times a positive is a...

• Positive 
• Negative 

a negative times a negative is a...

• Positive 
• Negative 

3.8 x 4

• 1.52
• 7.8
• 7.08
• 15.2

Multiply.

• 28/54
• -8/21
• -2  7/54
• -1

Tags

CCSS.7.NS.A.2A