Adding and Subtracting Integers

Vocab

100

Define:  Absolute Value

The distance of a number from zero

200

Define:  Integer

The set of whole numbers and their opposites

300

Define:  Opposite

The opposite of a number is the same distance from zero as the original number just on the other side of zero

400

Solve:  |-6|

Absolute value of -6 = 6

500

What do we call these integers:  6 and -6

Opposites

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 sum takes the sign of the higher absolute value

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