6.2 Adding Integers Using Absolute Value
The absolute value of a number is the distance
between the number and zero on a number line. The
absolute value of a number a is written |a|.
Ex. 2 – Finding Absolute Value
Find the absolute value of the number.
a. 4
The distance between 4 and 0 is ______. So, | 4 | = _______.
ß---------------------------à
b. -5
The distance between -5 and 0 is _____. So | -5 | = _______.
ß---------------------------à
Find the absolute value of the number.
1. 75
2. -10
3. -60
4. 36
Adding Integers
You can add integers without using a number line by
representing the length of each arrow using absolute
value.
Ex. 3 – Adding Two Integers Using Absolute Value
Example: Adding Two Integers Using Absolute Value
1.) -2 + (-11)
2.) -4 + 7
3.) -3 + (-9)
4) -8 + 4
5.) 0 + (-13)
6.) 18 + (-10)
Ex. 4 – Adding Three of More Integers
Su
ppose Aaron’s records these earnings and expenses for a
week:
$11, - $13, - $9, $3, $6
Find the sum of his earnings and expenses for the wee