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
Evaluate |-48|?
48
What do KFC or KCC stand for?
K- keep the first number
F/C - Flip or change subtraction for addition
C- change the sign of the second number
-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 two numbers whose absolute value is 32?
32, -32
Subtraction is the same as adding the...
Opposite
-16 + (-17) =
-33
Stephanie has $152 in the bank. she withdraws $20 then deposits $84 in an addition expression to represent this situation find the sum.
216
71 - (-14) =
85
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
Evaluate -|12|
-12
When using a number line, which way do you face when you are adding? What about subtracting?
Which direction do you walk in when you are adding/subtracting a negative?
Positive, Negative, backwards
-5 - 19 + 5 =
-19
You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
You owe 17 dollars
(-17)
-14 - (14) =
-28
What is an Integer?
A whole number that can be negative or positive
-5 ____-10
> Greater than
When adding numbers with the same signs, what do you do with the absolute values?
Add the absolute values and keep the sign.
-8+(-4)+12
0
An airplane takes off and then climbs 2500 feet. After 20 minutes, the airplane descends 150 feet. What is the airplane's current height?
2350 ft.
-32 - (-14) =
-18
What is an additive inverse?
Two numbers that when added together equal 0 because they are opposites.
Put in order from least to greatest
|-2|, 10, -4, 3
-4, |-2|, 3, 10
When adding numbers with different signs, what do you do with the absolute values?
Subtract the absolute values and take the sign of the larger absolute value.