7G:1.4.4 Multiplying & Dividing Integers

How can you use addition of groups to show        4 $\cdot$  (-3)=-12?

• 4 + 4 + 4 

• 3 + 3 +3 +3

• (-3) + (-3) + (-3) + (-3)

• (-4) + (-4) + (-4)

Tags

CCSS.7.NS.A.2C

A movie rental company deducts $7 from Serena's account every month for a year. After 1 year, how much do movie rental fees change Serena's account?
Deducting $7 means __________, and 1 year is 12 months so I need to find 12 $\cdot$  ____.

Tags

CCSS.7.EE.B.3

12 $\cdot$  (-7) =

• 84

• -84

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Which rule tells us 12 $\cdot$  (-7) = -84

• negative $\cdot$  positive = negative

• negative $\cdot$  negative = positive

• positive $\cdot$  negative = negative

• positive $\cdot$  positive = positive

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the average low temperature? How do you find the answer?

• (-4)+(-7)+(-13)+(-5)+(-6)=-35

• (-4)+(-7)+(-13)+(-5)+(-6)=35
  
  35 $\div$ -7

• (-4)+(-7)+(-13)+(-5)+(-6)=-35
  -35 $\div$ -7

Tags

CCSS.7.EE.B.3

-35 $\div$  5=

• 7

• -7

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Which equation has a negative solution?

• -6 $\div$ (-2)

• -6 $\div$ 2

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

C is incorrect, but what was Seth thinking to make him choose that answer?

Tags

CCSS.7.NS.A.2A

Which is the correct answer?

• -36 feet

• -4 feet

• 4 feet

• 36 feet

Tags

CCSS.7.NS.A.1A

• True, True, False

• False, True, True

• True, True, True

• True, False, Fasle

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B