Evaluate Numerical Expressions

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (like addition, subtraction, multiplication, and division) but does not have an equal sign.

Front

What does it mean to evaluate a numerical expression?

Back

To evaluate a numerical expression means to calculate its value by performing the operations in the correct order.

Front

What is the order of operations?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered by the acronym PEMDAS.

Front

What is the first step in evaluating the expression 3 + 4 x 6 - 4?

Back

The first step is multiplication, so you would calculate 4 x 6 first.

Front

How do you represent 'add four and nine and then multiply by six' as a numerical expression?

Back

(4 + 9) x 6.

Front

What is the result of evaluating (7 + 41) ÷ 2 – 15?

Back

9.

Front

What is the result of evaluating (16 - 6) x (2 + 4)?

Back

60.

Front

How do you represent 'multiply 2 and 12, and then subtract 8' as a numerical expression?

Back

(12 x 2) - 8.

Front

What is the value of the expression 3 + 4 x 6 - 4?

Back

The value is 19.

Front

What is the difference between a numerical expression and an equation?

Back

A numerical expression does not have an equal sign, while an equation does have an equal sign and states that two expressions are equal.