Adding Integers
Subtracting Integers
Multiplying Integers
Dividing Integers
Rules (Fill in the blank)
100

2 + 2 

4

100

17 - 9

8

100

7 x 5

35

100

27/-3

-9

100

When adding two integers that have the same sign you ________ them and use the sign of both integers.

add

200

-8 + -10 

-18

200

-7 - (-5)

-2

200

8 x -12

-96

200

-65/-13

5

200

When adding two integers with opposite signs, you _________ the two integers and take the sign of the greater absolute value.

subtract

300

3 + -9

-6

300

9 - 16

-7

300

11 x 11

121

300

66/-3

-22

300

When multiplying and dividing integers, if both integers have the same sign, the answer is _____________.

positive

400

38 + -15

23

400

86 - (-86)

172

400

45 x -6

-270

400

-100/50

-2

400

When multiplying and dividing integers, if both integers have different signs, the answer is _____________.

negative

500

-58 + 76

18

500

-480 - 879 

-1359

500

-52 x -18

936

500

-5000/-10

500

500

When you have to subtract numbers, what can you do to help you remember how to do it? Keep, change, _______!

flip