Adding
(-6)+(+18)
12
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 - ( ) = 12
-9
+3 and -3 are called....
Additive Inverses
What is the rule for adding integers with the same sign?
Keep the same sign.
Anna earns $12 in 3 hours. How much does she make in 5 hours?
$20
-14 + -8 =
-22
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
? - (-6) = +10
4
(-3) - (-9). Will this be positive or negative?
Posititve
Write 10 limes to 6 lemons as a ratio in 3 ways.
10:6, 10/6, 10 to 6
-40 + (25) =
-15
Stephanie has $152 in the bank. she withdraws $20 then deposits $84. How much does she now have?
216
? + (-6) = 4
10
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
When you add two negative integers the answer will always be?
Negative
A comparison between two numbers is called a______
ratio
-5 + (4) - 7
-8
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)
-14 - (14) =
-28
What do you call a whole number that can be negative or positive?
Integer
Subtracting a negative integer is the same as...
Adding a positive
Are 5/10 and 4/8 proportional?
Yes
(-8)+(-12) - 5 -2
-27
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.
( ) - (-14) = -18
-32
Arrange the number from smallest to largest:
-3, -4, -1, -23
-23, -4, -3, -1
Will this be positive or negative?
-22 + 24 -6
Ms. Curtis students study 25 hours for 2 tests, and studies 100 hours for how many tests?
8 Tests