__Algorithm for adding:__If addends have the same sign then

__COMBINE.__

__Example:__**2 + 8 = 10**

-2 + -8 = -10

8 +12 = 20

- 8+ -12 = -20

If addends have opposite signs CANCEL and the sum takes the sign of the addend with the larger absolute value (number further from zero).

__Example:__2 + -8 = -6

-2 + 8 = 6

8 + -12 = -4

-8 + 12 = 4

__Algorithm for subtracting:__Subtracting is the same as adding the opposite of the second number (subtrahend).

__Example:__-4 - 3 = -7

-4 + - 3 = -7

8 - 3 = 5

8 + -3 = 5

6 - -7 = 13

6 + 7 = 13

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