1. Exploring Real Numbers
ALGEBRA 1 LESSON 1-3
Find each absolute value.
a. |–2.5|
b. |7|
–2.5 is 2.5 units from 0 on a number line.
7 is 7 units from 0 on a number line.
|–2.5| = 2.5
|7| = 7
1-3

2. Exploring Real Numbers
ALGEBRA 1 LESSON 1-3
Name the set(s) of numbers to which each given number belongs.
1. –
Use <, =, or > to compare.
4. 5.
6. Find |– |.
rational numbers
irrational numbers
natural numbers, whole numbers
integers, rational numbers 3 4 5 8
> 3 4 5 8 –
< – 7 12 7 12
1-3