Find the Sum (+)
-12 + 5 =
=-7
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
-19 - ( 15) =
-34
What are opposites?
A negative number and its positive
Evaluate |-48|?
48
What does KCC stand for?
K- keep the first number
C - change subtraction to addition
C- change the sign of the second number
A scientist was keeping track of the temperature of a cup of coffee as part of an experiment. She wrote the expression 145 + (−3). This expression shows the temperature of the cup of coffee was originally ____ and the temperature __________ by ____ over a certain time interval.
145; decreased; 3
-5 - 19 + 5 =
-19
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
71 - (-14) =
85
What is absolute value?
The distance a number is from zero
What are two numbers whose absolute value is 32?
32, -32
Subtraction is the same as adding the...
Opposite
Santiago ran up 15 stairs. He realized he forgot something and went down 7 stairs. He finished by going up 20 more stairs. What stir did he end on?
28
-8+(-4)+12
0
Stephanie has $152 in the bank. she withdraws $20 then deposits $84. Write an addition expression to represent this situation and then find how much money she has.
216
-32 - (-14) =
-18
When you find a sum you are ________.
When you find the difference you are _____________.
Adding
Subtracting
Evaluate -|12|
-12
Explain why 4 - (-6) is the same as 4 + 6
2 negatives next to each other make a positive because of KCC
Gia’s bank account is −$38.07 currently. After she deposits $22.50, her account will be $22.50$58.07−$60.57−$15.57.
-$15.57
-8.18+(-2.52)
-10.70
You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
You owe 17 dollars
(-17)
6.5 - (-3.9)
10.4
+ --> Gain, Above, Over, Deposit, Profit, Bonus, Increase, Earn, Ascend
- --> Loss, Below,Under, Lost, Withdraw ,Drop, Decrease, Spend, Descend
> Greater than
-2 + (-3)
Chips
Number Line
Rule
The high temperature on a day was 28º F. The low temperature for the same day was −4º F. What was the difference between the high and the low temperature?
32
-1 1/2 + (-8/5)
-3 1/10
The record low temperature in Philadelphia was -7. The record low in Alaska is -80. What is the difference between these two temperatures? Write an expression and solve it.
73 degrees
1 5/6 -2/3 -(-3 1/6)
4 1/3
What is a zero pair?
Two numbers that when added together equal 0 because they are opposites.
Put in order from least to greatest
-|-2|, 10, -4, 3
-4, -|-2|, 3, 10
Describe 3 different ways you could solve this problems.
−0.5 + 3/10 − 2.6 − (−1/2 )
Responses will vary
Jasmine jumped from a diving board 10.5 feet off the ground into a pool. She touched the bottom of the pool which was 8.2 feet deep. What is the difference between Jasmine’s highest and lowest points?
18.7 feet