Adding and Subtracting Integers

Vocab/Rule

100

Operations

Adding, subtracting, multiplying, and dividing.

200

Integer

Positive and negative whole numbers.

300

Inverse

Opposite 

400

The rule for adding same sign is 

Add the numbers and keep the SAME sign 

500

The rule for subtracting integers is

Keep Change Change

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

How do you find the sum of numbers with different signs

Subtract and take the sign of the bigger number

500

-16+18+-17

-15

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-27 - (-3)

-24

500

-10 - 11 - (-3)

-18

Mix

100

-2 - 3

-5

200

-10 + 30

20

300

21 - (+5)

16

400

Subtracting a negative is the same thing as...

Adding a positive

500

-10 + (-2) - 5

-17