Absolute Value
What is the definition of absolute
The distance an integer is from zero
-3 +4
1
Rules for subtracting Integers
Write as addition problem
Leave, change, opposite
Rules for multiplying
Same signs positive
Different signs negative
Rules for dividing
Same signs positive
Different signs negative
l -10 l
10
Rules for adding integers
Same signs add absolute values
Different signs subtract absolute values
-3 - (-5)
2
(-2)^3
-12
8/-2
-4
A loss of 15 dollars
-15
-20 + (-10)
-30
15 - (-5)
20
-2(2x)
When x=3
-12
. xy/ 12
When x= 3 y= -4
-1
l -4 l + l 10 l
14
-10 + 10
0
-20 - 0
-20
5(-11)
-55
-42/ -6
7
l -10 l - l 3l
7
Demetrius deposits $120 into his account. One week later, he withdraws $36. Write an addition expression to represent this situation. How much higher or lower is the amount in his account after these two transactions?
120 + (-36)= 84
The highest and lowest recorded temperatures for the state of Texas are 120°F and -23°F. Find the difference in these extreme temperatures.
143
A deep-sea diver descends below the surface of the water at a rate of 60 feet each minute. What is the depth of the diver after 10 minutes?
-600
The enrollment at Davis Middle School dropped by 60 students over a 5-year period. What is the average yearly drop in enrollment?
12 students