Integer Situation

-9 + 9

• 18

• -18

• 0

• 81

-2 + 10

• 8

• -8

• 12

• -12

-7 - (-2) = ?

• 9

• -9

• -5

• 5

5 - (-12)

• -7

• 7

• 17

• -17

What are integers?

• Only positive numbers.

• Only negative numbers

• All whole numbers and their opposites

• Only Zero

Express an integer: a plane descended (goes down) 3000 ft

• 3000

• 300

• -300

• -3000

Which letters represent negative integers?

• b, d

• a, b, d

• a, c

• All are negative

What number is the opposite of -7?

Use an integer to describe this situation: diving 40 feet below sea level.

• 40

• -40

• 0

Use an integer to describe the situation: I owe Sarah 45 dollars.

• 45

• -45