Evaluate a Numerical Expression

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