Adding
Find the sum
(-6)+(+18)
12
3 - (-9) =
12
(-3) - (-9)
+6
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
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
What is add and keep the sign the same.
10 - ___ = -8
+18
-14 + -8 =
=-22
-19 - ( 15) =
-34
? - (-6) = +10
4
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
-3 and +3 are called what?
What are opposites.
Fill in the blank with < , > or =
-8 __ -6
-8 < -6
-40 + (25) =
-15
? + (-6) = 4
10
-22 + 24 -6
-4
Adding Integers: Stephanie has $152 in the bank. she withdraws $20 then deposits $84. How much does she now have?
216
When you add two negative integers the answer will always be?
What is negative.
8 - ___ = 12
-4
-5 + (4) - 7
-8
-14 - (14) =
-28
-30 + 15 - (-10)
-5
Subtracting Integers: You owe 5 dollars to your brother. You borrow 12 more dollars from him. What is the total amount you owe?
You owe 17 dollars
(-17)
Subtracting a negative integer is like...
a) adding a positive integer
b) adding a negative integer
c)subtracting a positive one
What is adding a positive integer.
__ + (-5) = 20
+25
(-8)+(-12) - 5 -2
-27
-32 - (-14) =
-18
24 - 3 + (-18)
3
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.
When you find a sum you are ________.
When you find the difference you are _____________.
What is adding and what is subtracting.
−7+__=2
9