Sum (+) of Integers
Find the sum
(+4)+(+20)
24
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
3 - (-9) =
12
What are opposites?
A negative number and its positive
What is the rule for adding integers with the same sign?
a) The answer is always positive
b) Add the opposite
c) Add and keep the sign
c
What is the absolute value of |-48|?
48
-12 + 5 =
=-7
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
-19 - ( 15) =
-34
What is absolute value?
The number away from zero
What are the rules for subtracting integers?
a) Add the opposite then follow the addition rules
b) Subtract and keep the sign of the bigger number
c) Subtract and keep the sign of the smaller number
a
What is the absolute value of |92|?
92
-16 + (-17) =
-33
Stephanie has $152 in the bank. She deposits $50 and then she withdraws $100. How much money is left in her bank account?
$102
71 - (-14) =
85
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
When adding integers with different signs you...
a) Subtractand keep the sign of the smaller number
b) Subtract and keep the sign of the higher number
c)Subtract the absolute value then add
b
What is the absolute value of -|12|
-12
-5 + (5) - 19 =
-19
You borrow 5 dollars from a friend on Wednesday. You then borrow 12 dollars more on Friday. How much money do you owe to your friend?
You owe 17 dollars
(-17)
-14 - (14) =
-28
What is an Integer?
A whole number that can be negative or positive
True or False: KCC stands for Keep Change Change
True
What is the absolute value of |-400|
400
-8+(-4)+12
0
An airplane takes off and then climbs to 3500 feet. After 60 minutes, the airplane descends 270 feet. What is the airplane's current height?
3,230 feet
-32 - (-14) =
-18
What is an additive inverse?
The same numbers that when added together equal 0 because they are opposites.
When adding multiple integers, what is a smart way to solve...
a) find additive inverses
b) add similar signs first
c)look at the signs
ALL OF THE ABOVE
What is the the absolute value of |0|
0