Important Concepts
The distance of a number from zero.
-5 + (-10) =
-15
|-251| =
251
-14 + 14 =
0
Jason dives 10 feet under water and swims back up 3 feet. Where is his current location in the water?
-7 feet
A whole number?
-40 + (-12) =
-52
|400| =
400
-10 + 4 =
-6
Chris gets paid $100, and then must pay his cable bill which is $245. How much money does he have?
-$145
What is an additive inverse?
A numbers opposite.
352 + 279
631
|-4| + |4| =
8
-15 + 12
-3
The temperature is now 76 degrees, it rose 12 degrees overnight. What temperature was it last night?
64 Degrees
What does this me? |-6| = 6
The absolute value of -6 is 6
-17 + (-29) =
46
|-10| + |-10| =
20
14 + (-11) =
3
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?
25 points
What is the Communitive Property?
a+b = b+a
-79 + (-120) =
-199
|-924| - |924|
0
27 + (-15)
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