Sum (+) of Integers
Find the sum
(+4)+(+20)
24
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
3 - (-9) =
12
What are opposites?
A negative number and its positive
What is the absolute value of |-48|?
48
(-32) + 17 + 32 =
17
-12 + 5 =
=-7
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
-9 - ( 1) =
-10
What is absolute value?
The number away from zero
What is the absolute value of |92|?
92
11 + (-6) + 2 =
7
-6 + (-7) =
-13
Stephanie has $152 in the bank. She withdraws $20 then deposits $84. How much money does she now have in the bank?
216
71 - (-14) =
85
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
What is the absolute value of -|12|
-12
98 - (-14) + (-55) =
57
45 + (-62) =
-17
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)
-14 - (14) =
-28
What is an Integer?
A whole number that can be negative or positive
Less than, greater than, or equal
-5 ____-10
> Greater than
-28 - 11 - (-20) - (-2) =
-17
-13 + 25 + (-17) =
-5
Subtracting Integers: 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?
The same 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
64 - 72 + (-25) - (-11) - 7 =
-29