Vocab
The distance of a number from zero
What is absolute value?
-66 + 42
-24
-19 - (-2)
-17
Sophia dives 15 feet under water and swims back up 7 feet. Where is her current location in the water?
-15 + 7 = -8
When signs are the same you...
Add the integers and keep the sign
Give an example of numbers that are opposites
Answers may vary
18 + (-14)
4
50 - (-9)
59
The temperature is now 75 degrees, it rose 9 degrees overnight. What was the temperature last night?
75 - 9 = 66
Any number times 0 is..
0
A positive or negative whole number
What is an integer?
(-36) + (-12)
-48
-4 - 6
-10
A squirrel runs 23 feet down a hill to eat an acorn. Then it runs 23 feet up the hill. What is the squirrel's final position with respect to the top of the hill.
-23 + 23 = 0
When adding integers and the signs are different, you...
Subtract the absolute values and keep the sign of the greatest integer
What is -120 and 120 an example of?
Opposites or Additive Inverses
When you add integers with the same sign you add the absolute values of the integers and _________ the sign the same.
Keep
88 - (-12)
Juliet sprints forward 20 feet and then stops and sprints back 32 feet. Where is Juliet relative to where she started?
20 - 32 = -12
-9 + (-7) = 2
TRUE or FALSE
What is Keep, Change, Change when subtracting integers?
KEEP the first number the same, CHANGE the subtraction sign to addition, and CHANGE the sign of the second integer to its opposite
When you add integers with different signs you subtract the absolute values of the integers and use the sign of the integer with the __________ absolute value.
Greater/Larger
When subtracting integers, you must ____ the _______.
ADD the OPPOSITE
Noah is working in a silver mine 10 feet below the surface. He descends until he reaches a point 57 feet below the surface. How many feet does Noah descend? Hint: Subtraction expression
-57 - (-10) = 47
Is this an integer? 5.8886...
NO