Adding and Subtracting Integers

Vocab

100

Absolute Value

The distance of a number from zero

200

Integer

The set of whole numbers and their opposites.

300

Opposite

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

400

|-6|

Absolute value of -6 = 6

500

6 and -6

Opposites

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-1)

-17

400

How do you find the sum of numbers with different signs

Subtract and take the sign of the bigger number

500

8+-17

-9

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-2 - (-3)

1

500

 11 - (-3)

14

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) 

-12

which is greater?

100

-20 or -5

-5

200

10 or -10

10

300

20 or -20

20

400

40 or -9

40

500

the absolute value of 6 or -7

the absolute value of 6