Subtracting Integers
21-34
-13
2/3 - 5/6
-1/6
.45 + 3.7
4.15
23 + 21
44
The distance a number is from 0. Always positive
Absolute Value
-10-8
-18
3/4 -(-1/4)
4/4 or 1
.45 - 3.7
-3.25
-2 + 12
10
A number and its opposite. Sum is 0
additive inverse
45-(-13)
58
-5/6 - 3/4
-19/12 = -1 7/12
When adding or subtracting decimals, what do we need to do with our decimals?
Line them up
11 + (-13)
-2
Number that is less than 0
Negative
-7-(-3)
-4
1/3 - 1/3
0
56 - .0765
55.9235
1/4 + 1/2
3/4
Any number that can be written as a fraction
What do we do when we have minus negative, -(-)
We change the sign to positive
7/10 - 3/20
11/20
4.87 + .98
5.85
1 2/3 + 7/6
17/6 = 2 5/6