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
Opposites
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
720 + (-150)
570
-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
The distance a number is away from zero on a number line
Be the first to raise your hand and you get a bonus!
Congratulations!
-300 + -812
-1112
-16 + (-17) =
-33
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
a)addition
b)subtraction
c)multiplication
d)all of the above
b)subtraction
860 + 420
1280
-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 whole number?
Integer
Negative integers added to negative integers equal what?
More negative integers.
The first person to raise your hand can remove points from another team of their choice.
That's TOUGH!!!
-8+ (-4)+12
0
An airplane takes off and climbs to 2500 feet. After 20 minutes, the airplane descends 200 feet. What is the airplane's current altitude?
2300 ft.
What do you get when you add or subtract two opposite integers together?
Zero Pairs
When adding many different integers together, what is a smart way to solve...
a) find zero pairs
b) add similar signs first
c) both a and b
c) both a and b
472 + -999
-527