Adding and Subtracting Integers
3 + (-7) =
3+ (-7)
= 3 - 7
= -4
-6 - (-5) + -8 =
-9
-6 + 18 =
12
6 x -4
6 x -4 +- = -
6 x 4
-24
−64÷−8
8
-6 + 4 =
-6 + 4
-2
6 - 4 + -19 - (-8)
-9
-18 - 9 =
-27
-8 x -9
--=+
8 x 9
72
225÷−15
-15
-4 - (-6)
-4 - (-6)
-4 + 6
2
14 - 8 + (-8) =
-2
-38 - (-7)
-31
-18 x -9 =
162
−121÷11
-11
-22 + (-8)
-22 + (-8)
-22 - 8
-30
A scuba diver starts at sea level (0 m), descends 18 m, then rises 6 m, and later descends another 9 m. What is the diver’s final position?
-21m
The temperature is 5°C, then it drops 8°C overnight. What is the new temperature?
-3 degrees C
You lose $8 each day for 7 days. What is your total loss?
-$56
−84÷−7÷2
6
-6 - (-9)
-6 - (-9)
-6 + 9
3
The temperature in a town was −4°C in the morning. It rose by 7°C during the day, then dropped 10°C at night. What was the final temperature?
-7 degrees C
You have $20, then spend $35. What is your balance now?
-$15
The temperature drops 3°C each hour for 5 hours. What is the total change in temperature?
-15 degrees C
A submarine descends -90 metres over 9 minutes. What is the rate per minute?
-10 metres per minute