In mathematics, different functions has different rules and I can see a lot of students are struggling with the rules for integers. So I'll kindly discuss the rules for each operation: + - * /

**Addition**

(-) + (-) = (-)

**Ex:**-9+-8=-17

(+) + (+) = (+)

**Ex:**4+6=10

(+) + (-) [Remember to always take the bigger number sign and use the opposing operation, which is subtraction to solve the equation.]

**Ex:**5+-3=2

(-) + (+)

**Ex:**-9+8=-1 [Same rule follow as above]

**Subtraction**

(-) - (-)

**Ex:**-9-(-8) = -9+8

[When two negatives are next to each other you change to its opposing operation: addition and change the 8 into a positive integer.]

(+) - (+) = (+) [Unless the first integer is smaller than the second.

**Ex:**5-8= 5+-8 [Then you follow the rule stated above.]**Ex:**8-6=2

(+) - (-) [Follow the rules stated above]

**Ex:**5-(-5)= 5+5

(-) - (+)

**Ex:**-5-6 = -5+-6

**Multiplication**

(-) * (-) = (+)

**Ex:**-9*-8=72

(+) * (+) = (+)

**Ex:**6*7=42

(+) * (-) = (-)

**Ex:**9*-6=-54

(-) * (+) = (-)

-7*9=-63

**Division**

*The rules for multiplication is the same as division but I'll still provide examples.*

*(-) / (-) = (+)*

**Ex:**-64/-8=8

*(+) / (+) = (+)*

**Ex:**121/11=11

*(-) / (+) = (-)*

**Ex:**-72/8=-9

*(+) / (-) = (-)*

**Ex:**36/-6=-6

*Feel free to use this as a study guide for test taking purposes, thanks for your time.*