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Vocab
Adding Integers
Subtracting Integers
Mix
Real World Application
100
Absolute Value
The distance of a number from zero
100
-5 + 9
4
100
-4 - 6
-10
100
-2 - 3
-5
100

Joe and Scott equally share a pizza.  If Scott eats ½ of his portion of the pizza, what fraction of the whole pizza does he eat?

1/4

200
Integer
The set of whole numbers and their opposites.
200
-12 + 5
-7
200
4 - 11
-7
200
-10 + 30
20
200

Marcus dives from the surface of the ocean to a reef 18 meters below sea level. What integer represents how far Marcus would have to swim to return to the surface?

+18

300

Opposite

The opposite of a number is the same distance from zero as the original number just on the other side.

300
-16 + (-17)
-33
300
15 - (-7)
22
300
21 - (+5)
16
300

In order for an atom to have a zero charge, every proton, which has a charge of +1, must be matched with an electron, which has a chagre of -1. A helium atom has 2 protons and 2 electrons. What is the charge of of the helium electron?

Zero Charge

400
|-6|
Absolute value of -6 = 6
400

15.5 + (−16.75 )

-1.25

400
-27 - (-3)
-24
400

Subtracting a negative is the same thing as...

Adding a positive

400

Megan and Jake both live on the same street that the library is on. Jake lives 4.5 kilometers to the left away from the library and Megan lives 5.5 kilometers to the right from the library. If the librabry is the 0 on the street (numberline) how far apart How many kilometers (km) apart do Megan and Jake live?

10 kilometers

500
6 and -6
Opposites
500

-16.2+18.8+-17.3

-14.7

500
-10 - 11 - (-3)
-18
500
-10 + (-2) - 5
-17
500

Springfield has an elevation of -150 feet. Greenville is 35 more feet below sea level as Springfield.  What is Greenville’s elevation, in feet?

-185 feet