Adding
Find the sum
-6 + 18
12
3 - (-9) =
12
What is the absolute value of -3?
3
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
C) add and keep the sign the same.
5/8 - 2/8 =
3/8
-14 + -8 =
=-22
-19 - ( 15) =
-34
l 24 l
24
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?
opposites
3/4 - (-1/4) =
4/4 or 1
-40 + 25 =
-15
? + (-6) = 4
10
What is the definition of absolute value?
distance from a number and zero
Stephanie has $152 in the bank. She withdraws $20 then deposits $84. How much does she have now?
216
When you add two negative integers, the answer will always be _________.
Negative
6/10 + 3/5 =
1 1/5
-5 + 4 - 7 =
-8
-14 - (14) + 67 =
39
l -7 l ______ 7
=
Josh is playing a game. First, he loses 4.8 points. Then he gains 2.5 points. Finally, he loses another 7.8 points. What is the overall change in Josh's score?
-10.1 points
Explain how to change subtraction to addition.
Keep the first number, change subtraction to addition and then change the second number to its opposite.
3/8 - 1/3 =
1/24
-8 - 12 - 5 - 2
-27
-32 - (-14) + 6 - 12 =
-24
-l-6l _______ -12
An underwater vehicle is at an elevation of -8 1/4 feet. It dives down 6 2/3 feet to collect a specimen. Then it dives another 15 3/4 feet. What is the final elevation of the vehicle?
-30 2/3 feet
When you find a sum, you are ________.
When you find the difference, you are _____________.
adding and subtracting, respectively
-6/10 - (-5/2) =
1 9/10