Adding and Subtracting Integers

Vocab

100

What is the symbol used for addition and what is the inverse?

+ and the inverse is Negative

200

What is the symbol used for subtraction and what is the inverse?

- and addition

300

List 3 symbols for multiplication

x * ()

400

what are the symbols for division 

 / and -

500

what is the inverse of Multiplication?

division

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

What is the rule for adding integers?

 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

what are the 3 rules for subtracting integers?

1.) keep sign of 1st number

2.) Change problem from subtraction to addition 

3.) Make the 2nd number the opposite sign 

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