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 tells you the sequence to follow when evaluating expressions: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What is the value of (6 + 12) x 10?

Back

180

Front

How do you simplify the expression 16 - 4 + 5?

Back

First, subtract 4 from 16 to get 12, then add 5 to get 17.

Front

What is the result of (11 x 4) + 9?

Back

53

Front

What does it mean to combine like terms in an expression?

Back

Combining like terms means to add or subtract terms that have the same variable raised to the same power.

Front

What is the value of (12 x 6) - 4?

Back

68

Front

How do you represent the total amount of money Andrea has with 6 one-dollar bills and 3 five-dollar bills?

Back

(6 x 1) + (3 x 5) = 6 + 15 = 21.

Front

What is the first step in simplifying the expression 9 x (4 + 5) - 2?

Back

The first step is to simplify the expression inside the parentheses: 4 + 5 = 9.