Sum (+) of Integers
Add:
4+16 =
4 + 16 = 20
Subtract:
3 - (-9) =
12
Adding Integers: A football team loses 5 yards on one play and then loses 8 yards on the next play. How many yards did they lose on the two plays?
They lost 13 yards
-13
Distribute:
4(6x+4)=
4(6x+4)= 24x + 16
Use the distributive property to have 3 as a common factor.
24a + 6b + 12
3(8a + 2b + 4)
Add:
-12 + 5 =
-12 + 5 = -7
Subtract:
-9 - (5) =
-9 - (5) = -14
Daily Double
Adding Integers: You park in a garage 3 floors below ground level. Then you get in the elevator and go up 12 floors. What floor do you get off the elevator?
9th floor
Distribute:
3(-7x+4)
3(-7x+4) = -21x + 12
Use the distributive property to have 4 as a common factor.
16a + 20b - 24
Add:
-16 + 17 =
-16 + 17 = 1
Subtract:
-11 - (-5) =
-11 - (-5) = -6
Adding Integers: Stephanie has $15 in the bank. She deposits 4 dollars into her account. Use an equation to represent this situation and find the sum.
15 + 4 = 19
Distribute:
-(4x + 4) =
-(4x + 4) = -4x -4
Use the distributive property to have 5 as a common factor.
-35a + 40b - 15
5(-7a + 8b - 3)
Add:
-15 + (-1) =
-15 + (-1) = -16
Subtract:
-14 - (14) =
-14 - (14) = -28
Subtracting Integers: You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
You owe 17 dollars
(-17)
Distribute:
9(-3x-4) =
9(-3x-4) = -27x - 36
Use the distributive property to have 7 as a common factor.
-49a + 42b - 7
7(-7a + 6b -1)
Add:
(-12) + (13):
(-12) + (13) = 1
Subtract:
-10 - 14 =
-10 - 14 = -24
Daily Double
Subtracting Integers: One morning in Cullowhee, the temperature was 19 degrees Fahrenheit. The temperature over night reached -5 degrees Fahrenheit. What is the total change between the morning temperature and the night temperature?
24 degrees
Distribute:
-5(-3x - 4) =
-5(-3x - 4) =15x + 20
Use the distributive property to have 9 as a common factor.
90a - 45b - 18
9(10a - 5b -2)