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 the term 'evaluate' mean in mathematics?

Back

To evaluate means to calculate the value of a numerical expression.

Front

What is the order of operations?

Back

The order of operations is a set of rules that tells you the sequence in which to perform operations in a mathematical expression: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered as PEMDAS.

Front

What is the result of adding two numbers called?

Back

The result of adding two numbers is called the sum.

Front

What is the result of subtracting one number from another called?

Back

The result of subtracting one number from another is called the difference.

Front

What is the result of multiplying two numbers called?

Back

The result of multiplying two numbers is called the product.

Front

What is the result of dividing one number by another called?

Back

The result of dividing one number by another is called the quotient.

Front

How do you write an expression for '3 boxes of key chains with 6 beads each'?

Back

The expression is 3 x 6.

Front

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

Back

Combining like terms means to simplify an expression by adding or subtracting terms that have the same variable raised to the same power.

Front

What is a variable in mathematics?

Back

A variable is a symbol (often a letter) that represents a number that can change or vary.