Adding/Subtracting INTERGERS

negative - negative

8

-8 - (-8)

0

Bonus 100 points - what is this called?

16

-8 - (-16)

8

24

-8 - (-24)

16

32

-8 - (-32)

24

40

-8 - (-40)

32

positive - positive

8

8 - 8

0

16

8 - 16

-8

24

8 - 24

-16

32

8 - 32

-24

40

8 - 40

-32

negative - positive

8

-8 - 8

-16

16

-16 - 16

-32

24

-32 - 32

-64

32

-64 - 64

-128

40

-128 - 128

-256

negative + positive

8

-8 + 8

0

Bonus 100 points - what is this called?

16

-8 + 16

8

24

-8 + 24

16

32

-8 + 32

24

40

-8 + 48

40

negative + negative

8

-9 + -9

-18

16

-18 + -18 

-36

24

-36 + -36

-72

32

-72 + -72

-114

40

-144 + -144

-228