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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

When you add integers with the same sign, what do you do?

(+) and keep the sign

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

What do you do when you are adding integers with different signs?

(-) and keep sign of larger number

300

Which number is an example of an integer?

A. 1/8

B. .39

C. -7

D. 8.3

 

-7

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

John had a balance of $22 in his bank account.  He wrote a check for $38.  What is his new balance?

-$16

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, Jareek earned 15 points in the first round, in the 2nd round he lost 20 points for not showing sportmanship. In the final round he scored double what he did in the first round. What is his final score?
15 + (-20) + 30 = 25 points
400

The record high temperature in January was 18 degrees.  The record low temperature was - 7 degrees.  What is the difference between the high and low temperatures?

25 degrees

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
Nikkia 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 1/4 of it. How much money is in her bank account?
$85
500

The football team gained 9 yards on their first play.  On the next play they lost 17 yards.  By how many yards did their position change?

-8