Integer Operations

Introduction

In this smore you will learn how to add, subtract, multiply, and divide integers.

1.- First you need to see the signs.

2.- If both signs are the same then you add and stay with the same sign.

3.- If they are different then you will subtract and stay with the sign of the highest number.

EXAMPLES:

-2+(-6)= -8

-4+6= 2

-6+(-12)= -18

Rules for subtracting

First you see the signs.

Then if you have like signs you add the numbers and stay with the sign.

Then if you have different signs you subtract and stay with the highest number sign.

Remember to change all the numbers to addition.

EXAMPLES:

-3-1= -4

-3-(-2)= -5

-5-4= -9

Rules for multiplication

First look at the signs.

Then if they are like signs they stay positive.

Then if they are unlike signs the answer would be negative.

EXAMPLES:

-3*-2= 6

-4*-8= 32

-9*3= -27

Rules for division

First look at the signs.

Then if they are like signs they stay positive.

Then if they are unlike signs the answer would be negative.

EXAMPLES:

-12/-3= 4

-45/5= -9

-25/-5= 5