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Important Concepts
Adding Integers
Subtracting Integers
Word Problems
Mixed Review
100
Absolute Value
The distance of a number from zero
100

-5 + 9

4

100
-4 - 6
-4 + (-6) = -10
100
Jason dives 10 feet under water and swims back up 3 feet. Where is his current location in the water?
-10 + 3= -7
100

145.6 / 0.7

208

200
Integer
Positive and negative whole numbers and 0
200

-12 + 5

-7

200
4 - 11
4 + (-11) = -7
200
Chris gets paid $100, and then must pay his cable bill which is $245. How much money does he have?
100 - 245 = $-145
200
8.75 written as a percent
875%
300
What are additive inverses
Numbers that are opposite and have a sum of zero
300

-16 + (-17)

-33

300
15 - (-7)
15 + 7 = 22
300
The temperature is now 76 degrees, it rose 12 degrees overnight. What temperature was it last night?
76-12 = 64 degrees
300

8.75 x 3.5

30.625

400
What does this mean? |-6| = 6
The absolute value of -6 is 6, or -6 is 6 units from zero.
400

How do you find the sum of numbers with different signs

Subtract and take the sign of the # with the greater absolute value

400
-27 - (-3)
-27 + 3 = -24
400

In a game, Jake earned 15 points in the first round, in the 2nd round he lost 20 points for not showing sportsmanship. In the final round, he scored 17. What is his final score?

15 + (-20) + 17 = 12 points

400

1/2 + 3/4

1 1/4

500
Subtracting a positive number is the same thing as...
Adding a negative 7-4 = 7 +-4
500

-16+18+-17

-15

500
-10 - 11 - (-3)
-10 + (-11) + (3)= -18
500

Nikki starts with $1000 in her bank account, she withdraws $750 to pay her rent. She lets a friend borrow $70, buys new clothes for $120. She finds $100 cash on the street and deposits it into her account. How much money is in her bank account?

1000 + (-750) + (-70) + (-120) + 100 = $160

500

Starting from the school, the track team ran 7 miles east, they then ran 5 miles west. How far away did they end up from the school? (Hint: Draw a number line)

The kids ended up 2 miles east of the school.