Sum (+) of Integers
Find the sum
4 + (-20)
-16
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
Numbers that are the same distance from zero but on the different sides of zero on the number line
a) different integers
b) opposite integers
opposite
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) Add and keep the sign
20 + (-15)
5
-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
Who lives in a pineapple under the sea?
Spongebob Squarepants
Free Points
Congratulations!
-10 + -8
-18
-6 + (-17) =
-23
Adding Integers: Stephanie has $152 in the bank. She withdraws $20 then deposits $84 How much money is in her bank account?
216
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
For which of the following can you NOT change the order in which you perform the operation?
a)addition
b)subtraction
c)multiplication
d)all of the above
b)subtraction
14+ (-3)=
11
-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)
What is the name for a negative or positive number?
Integer
Negative integers added to negative integers equal what?
More negative integers.
-13 + 15=
2
-8+ (-4)+12
0
An airplane takes off and climbs to 25 feet. After 20 minutes, the airplane descends 20 feet. What is the airplane's current altitude?
3 ft.
What do you get when you add or subtract two opposite integers together?
Zero
What is the rule if the signs are different?
Subtract, and take the sign of the larger number
22 + (-19)=
3