Operating Integers

-9 + (-5)

• -14

• 14

• -4

-14 + (-3)

• -17

• 11

• -11

• 17

10 + (-4) = ?

• -6

• 6

• 14

• -14

-8 + 20

• -28

• 28

• 14

• 12

Match the following with the correct operation and sign of the answer.

• add, positive

• 3 + 5

• subtract, negative

• -717 + 927

• add, negative

• -762 + (-481)

• subtract, positive

• -1239 + 904

Match the following

• -8

• -4 - 4

• 3

• -2 + 10

• -12

• 5 - (-7)

• 8

• 10 + (-7)

• 12

• -16 +4

A submarine is submerged at 20 feet below the surface. The submarine is now  descending at a rate of 120 feet per minute. Which integer represents the position of the submarine after 3 minutes?

• • -20 feet below the surface

• -380 feet below the surface

• -360 feet below the surface

A submarine was 1800 ft below sea level. It dove another 1500 feet deeper. Which integer represents its location?

• -300

• -1300

• -3300

• 300

When you subtract a negative number we add its ​ ​ (a)   .

• opposite

• inverse

If I am subtracting integers, I need to change the problem to addition by ​ ​ (a)   ​ the ​ (b)   ​

• opposite

• subtracting

• same sign

• adding