Adding Integers
Add the integers
6 + (-4) =
2
Subtract the integers
7 - 10 =
-3
Multiply the integers, show your work with a number line
(-3) x 2 =
-6
Divide the integers, show your work with a number line
(-15) / 3 =
-5
When you woke up, the temperature outside was -5º C. It rose 2º each hour for the next four hours. What was the temperature outside after four hours?
Write out the equation then solve.
(-5) + (2)(4) = +3ºC
Add the integers, show your work with tiles
(-3) + 2 =
-1
Subtract the integers, show your work on a number line
-5 - 7 =
-12
Multiply the integers
3 x (-6) =
-18
Divide the integers
(-28) / 7 =
-4
An elevator is on the twentieth floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?
Write out the equation then solve.
20 - 11 + 5 = 14
Add the integers, show your work on a number line
(-5) + (-6) =
-11
Subtract the integers, show your work with tiles
(+4) - (+8) =
-4
Multiply the integers
(-7) x (+7) =
-49
Divide the integers
(-54) / (-9) =
+6
A deep-sea exploring ship is pulling up a diver at the rate of 25 feet per minute. The diver is now at 200 feet below sea level. How deep was the diver 10 minutes ago?
Write out the equation then solve.
(-200) - (25)(10) =
- 450 ft or 450 ft below sea level
Add the integers
(-12) + (-4) + (-3) =
-19
Subtract the integers
(-9) - 4 - (-3) =
-10
Multiply the integers
(-8) x (-6) =
+48
Divide the integers
(-84) / (+7) =
-12
Josie has $47 left in her checking account. If she writes a check for $55 and one for $12, what will Josie’s balance be?
Write out the equation then solve.
47 - 55 - 12 = $ -20
Add the integers
(-20) + (+3) =
-17
Subtract the integers, show your work with tiles
(-4) - (-6) =
+2
Multiply the integers
(-9) x (-8) =
+72
Divide the integers
(-90) / (+6) =
-15
A scuba diver swam 96 metres beneath the surface of the lake. He then climbs up 49 metres and dives back 12 m to avoid a shark. What is his depth now?
Write out the equation then solve.
-96 + 49 - 12 = -59
He is at 59 below water level or -59