Multiplying Integers

A negative times a negative equals

• one

• a negative answer

• zero

• a positive answer

A negative times a positive equals

• zero

• a negative answer

• a positive answer

• one

-6(-2)

• 12

• -8

• 8

• -12

-8(4)

• -32

• 4

• 32

• -4

-9(-4)

• 36

• -13

• 13

• -36

-8(1)

• -8

• -7

• 8

• 7

-7(-7)

• 49

• 14

• -49

• -14

2 x 5

• 10
• -10
• 7
• -7

A football team lost 5 yards on each of 3 plays. Explain how you could use a number line to find the teams change in field position after the three plays.

• Starting at zero, you would move left 5 spaces, 3 times. 
• Starting at zero, you would move right 5 spaces, 3 times.
• Starting at zero, you would move left 3 spaces, 4 times.
• Starting at zero, you would move right 4 spaces, 3 times.

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

• $525
• $-525
• $225
• $-225