**Definition of Evaluate a Numerical Expression**

- To evaluate a numerical expression, we simplify it by using the given operations to obtain a single numerical value.

**More about Evaluate a Numerical Expression**

- Order of operation or PEDMAS (Parentheses, Exponentiation, Division/Multiplication, Addition/Subtraction) rule is applied to evaluate a numerical expression.

**Example of Evaluating a Numerical Expression**

- To evaluate 23 + 25 ÷ (25 - 20), we first perform the operation within parentheses and then apply division and addition.

23 + 25 ÷ (25 - 20) = 23 + 25 ÷ 5

= 23 + 5

= 28

**Solved Example on Evaluating a Numerical Expression**

What is the simplest form of the given numerical expression?

(- 9)(54)(- 5)

Choices:

A. 28130

B. 28127

C. 28123

D. 28125

Correct Answer: D

Solution:

Step 1:(- 9)(54)(- 5)

Step 2:(- 9)(5 × 5 × 5 × 5)(- 5) [Since b^{n}= b × b × b ×.... n times.]

Step 3:28125

**Related Terms for Evaluating a Numerical Expression**

- Numerical Expression
- Order of Operations
- Simplify