Subtracting Integers
6 - 9 = ?
-3
(-8) + 10 =
2
Re-write as addition:
8 - 16 =
8 + (-16) =
The temperature is 16C in the afternoon and drops 9C by 10pm.
What is the temperature at 10pm?
7C
3 - 11 = ?
-8
9 + (-7) =
2
Re-write as additon:
4 - (-14) =
4 + 14 =
The temperature in Alaska in January is -5C during the day and drops 8 degrees by night.
What is the temperature at night?
-13C
5 - (-10)
15
(-7) + 14
7
Re-write as addition:
(-8) - (-3) =
(-8) + 3
After the temperature decreased 14 degrees overnight it is -5.
What was the initial temperature?
9 degrees
(-8) - (-8) = ?
0
(-13) + (-9) = ?
-22
Re-write as addition:
(-9) - 9 =
(-9) + (-9)=
After the temperature decreased 18 degrees from noon to midnight it was -3 degrees.
What was the initial temperature?
15 degrees
(-7) - 7 = ?
-14
(-6) + 19 = ?
13
Re-write as addition:
543 - 692 =
543 + (-692) =
After the temperature decreased 29 degrees from sunset to sunrise, the temperature was -9 degrees.
What was the initial temperature?
20 degrees