Multiplying and Dividing Integers

Multiplying and Dividing Integers

(and other rational numbers too!)

Multiple Choice

18 ÷ 2

• 9

• -9

• -20

• 10

Multiple Choice

(2)(10)

• 20

• -20

• -12

• 12

Multiple Choice

Over a 6 week period, the price of a gallon of gas increased by 18 cents.

If the price changed the same amount each week, what was the average change per week?

• -3 cents

• 3 cents

• 108 cents

• -108 cents

Multiple Choice

A mountain climber climbed up a cliff 50 feet at a time. He did this 5 times in one day. What was the overall change in his elevation?

• -10 feet

• 10 feet

• -250 feet

• 250 feet

Multiple Choice

-30/-10=

• -30

• -3

• 3

• 30

Multiple Choice

(-7) x (-7)

• 14

• -14

• 49

• -49

Multiple Choice

-20/5=

• -4

• 4

• -100

• 100

Multiple Choice

4(-20)

• 80

• -80

• 24

• -24

Multiple Choice

7 x -4

• 28

• -28

• 11

• 74

Multiple Choice

A drought can cause the level of the local water supply to drop by a few inches each week. Suppose the level of the water supply drops 2 inches each week. How much will it change in 4 weeks?

• -16 inches

• -8 inches

• -2 inches

Multiple Choice

Desmond's monthly Netflix subscription costs $10.  If he charges it to his credit card each month for 5 months without making any payments, what will his debt be?

• -$14
• -$2
• -$45
• -$50

Multiple Choice

Flora made 3 withdrawals of $75 each from her bank account.
What was the overall change in her account?

• -$225
• $225
• -$25
• $25

Multiple Choice

The football team lost 8 yards on every play for 5 plays. Which integer shows the total number of yards the team has lost?

• 40

• -40

• 3

• -3

Multiple Choice

Bob bought a Ford Expedition for his family. After five years, the SUV was worth $10,000 less than what he paid for it. What integer represents how much value the SUV lost each year?

• -$200

• -$2,000

• $2,000

• -$8,000

Multiple Choice

Kim was walking down a rocky path.  
For 4 minutes, the elevation dropped at the same rate. Altogether it dropped 8 feet.  
What was the change in elevation each minute?

• -8 ÷ 4 = -2 feet per minute
• 8 ÷ 4 = 2 feet per minute
• 8 - 4 = 4 feet per minute
• 8 + 4 = 12 feet per minute

Multiple Choice

The temperature drops 2°F each hour. What is the total change in temperature after 12 hours?

• -24

• 26

• 24

• -26

Multiple Choice

A scuba diver descends 48 feet in 4 minutes. What is the diver's average change in position per minute relative to where he started?

• -52 fee per minute

• -12 feet per minute

• 12 feet per minute

• 52 feet per minute

Multiple Choice

A swimming pool has 500 gallons of water in it and is leaking. The change in the amount of water in the pool is -3 gallons per hour. How many gallons of water will the pool contain in 6 hours?

• 482 gallons

• 491 gallons

• 503 gallons

• 509 gallons

Multiple Choice

Suzie's car insurance payment decreases by $20 each year. Which equation represents the total change in her payment, in dollars, after 5 years?

• 20 - 20 - 20 - 20 - 20 = -100

• 5 x (-20) = -100

• -20 x (-5) = -100

• 20 x 5 = -100

Multiple Choice

Solve the expression   -1(-3)(-2)(-2) =

• 12
• -12
• 8
• -8

Multiple Choice

Are the two expressions equivalent? 
   -5(3) and 5(-3)

• yes
• no

Multiple Choice

Solve the expression   -2(-1)(2)(-3) =

• 8
• 12
• -
• -12

Multiple Choice

Which expression DOES NOT have a product of −18?

• −2 ∗ −9
• −6 ∗ 3
• −3 ∗ 6
• −9 ∗ 2

Multiple Choice

• 5
• -5
• 3
• -3

Multiple Choice

• 5
• 6
• -5
• -6

Multiple Choice

• -4
• -6
• 4
• 6

Multiple Choice

Which number sentence is represented by this model?

• –4 • 7 = 28
• –4 • 7 = –28
• 4 •(–7) = 28
• -4 •(–7) = –28

Multiple Choice

On a certain day, the temperature changed at a rate of -3º an hour. How many hours did it take to reach -33º?

• 11 hours

• -11 hours

• 99 hours

• -99 hours

Multiple Choice

Which number sentence is represented by this model?

• 3 × (-2) = 6
• 3 × (-2) = -6
• 3 × 2 = 6
• -3 × (-2) = -6

Multiple Choice

When dividing integers....

• follow the same rules as multiplying integers
• Follow the same rules as adding integers
• Follow the same rules as subtracting integers
• Always do the opposite

Multiple Choice

If I have two negatives what will the product be?

• Negative 
• Positive 

Multiple Choice

If I have a negative multiplied with a positive, what will the answer be?

• Positive 
• Negative 

Multiple Choice

If I have a positive multiplied with a positive, what will the answer be?

• Positive 
• Negative