0.3
Pre- Algebra - Order of Operation s
Objective: Evaluate expressions using the order of operations, including
the use of absolute value.
When simplifying expressions it is important that we simplify them in the correct
order. Consider the following problem done two different ways:
Example 1.
2 + 5
· 3 Add First 2 + 5 · 3 Mul tiply
7 · 3 Multiply 2 + 15 Add
21 Solution 17 Solution
The previous example illustrates that if the same problem is done two different
ways we will arrive at two different solutions. However, only on e method can be
correct. It turns out the second method, 17, is the correc t method. The o rder of
1