Adding and Subtracting Integers

Vocab

100

The rule for adding integers with the same sign. 

positive + positive = negative

200

The rule for subtracting integers.

ADD the OPPOSITE!!

300

Opposite

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

400

Create a sentence story for: 10 + -3

I have 10 _________ and lost 3 ___________.

500

6 and -6

Opposites/zero pair

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