Category 1
Category 2
Category 3
Category 4
Category 5
100

(-5)⋅(-4)

What is 20

100
(-5)(4)
What is -20
100
(5)(-4)
What is -20
100
(-5)(-3)
What is 15
100
(-5)(13)
What is -65
200

(-6)⋅(-7)

What is 42

200
(-6)(4)
What is -24
200
(5)(-2)
What is -10
200
(-8)(-7)
What is 56
200
(-5)(70)
What is -350
300

(-8)⋅(-9)

What is 72

300
(-5)(7)
What is -35
300
(5)(-20)
What is -100
300
(-1)(-454)
What is 454
300
(-5)(15)
What is -75
400

(-10)⋅(-9)

What is 90

400
(-5)(8)
What is -40
400
(6)(-4)
What is -24
400
(-50)(-40)
What is 2000
400
(-10)(4)
What is -40
500

(-5)⋅(-12)

What is 60

500
(-5)(11)
What is -55
500
(5)(-41)
What is -205
500
(-25)(-4)
What is 100
500

What are the rules for multiplying integers? Make sure to explain what it is important to decide BEFORE multiplying 

pos. x pos. = pos.

neg. x neg. = pos.

pos. x neg. = neg.

neg. x pos. = neg.

Same sign = pos.

Diff. sign = neg.

Decide the sign BEFORE multiplying 

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