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.

Video Examples: Evaluating Numerical Expressions
 

Example of Evaluate 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 Evaluate a Numerical Expression

Ques: 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 bⁿ = b × b × b × .... n times.]
Step 3: 28125

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