Ordering, Addition and Subtraction of Integers

From 10 meters below sea level, Reeny took off in his helicopter and ascended 100 meters. Which integer represents Reeny's elevation now?

• -90

• 90

• 110

• -110

In Buffalo, New York, the temperature was -14°F in the morning. If the temperature dropped 7°F, what is the temperature now?

• -7°F

• -21°F

• 7°F

• 21°F

A submarine is 150 below sea level while an airplane is 375 above sea level.  What is the difference between the height of the submarine and the airplane?

• -525

• 525

• 325

• -325

- (-1) =

• -2

• -1

• 0

• 1

• 2

5 + (-6) =

• -11

• -1

• 1

• 11

-7 - (-8) =

• -15

• -1

• 1

• 15

-12 + 9

• -21

• -3

• 3

• 21

Positive + Positive =

• Positive

• Negative

• Difference with sign of number that 'looks' bigger

Negative + Negative =

• Positive

• Negative

• Difference with sign of number that 'looks' bigger

Which question is the SAME as
-4 - (-2)      

• -4 + 2

• -4 - 2

• 4 + 2

• 4 - 2