Vocab
the distance of a number from zero
absolute value
5 + 8
13
-76 + (-3) + 5
-74
13 - 9
4
The set of whole numbers and their opposites.
Integers
-12 + 5
-7
-14 + 4 + 78
68
-9 - 3
-12
numbers that are the same distance from zero as the original number just on the other side (so if positive the _______ is negative, if negative the ___________ is positive).
Opposite
(-16) + (-17)
-33
89 + (10) + (-80)
19
-4 - (6)
-10
|-6|
absolute value of -6=6
How do you find the sum of numbers with different signs?
Subtract and take the sign of the bigger number
-5 + 8 + 5 + (-7) + (-8)
-7
8 - (-9)
17
Subtracting Integers - what is the rule?
Explain how to rewrite -15 - 3 by adding the opposite
Answer:
Keep, change, change
Keep -15, change the subtraction sign to +, change the + sign in front of the 3 to a - sign.
-15 + (-3) = -18
-16 + 18 + (-17)
-15
-23 + 5 + (-33) + 23 + 33 + (-100)
-95
- 8 - (-6)
2