Adding and Subtracting Integers

Vocab

100

Absolute Value

The distance of a number from zero

200

Define Integer. 

Or give an example of integer

The set of whole numbers and their opposites.

300

What is the opposite of - 12?

12

400

What is |-6|?

Absolute value of -6 = 6

500

What is the relationship between 6 and -6?

They are opposites or (additive inverse)

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

Rule for adding/subtracting

100

Is the sum negative (-) or Positive (+)?

-8 + (-8)

Negative

200

Is the sum positive (+) or Negative (-)?

- 21 + 2

Negative

300

Is the sum Positive (+), Negative (-), or zero (0)?

6 + (-6) 

zero

400

Is the difference negative (-), positive (+), or zero (0)?

-10-(10)

zero

500

Is the difference negative (-), positive (+), or zero(0)?

-5 - 5?

Negative (-)