Expressions & Equations

Front

What is an expression in math?

Back

An expression is a combination of numbers, variables, and operations (like addition or multiplication) that represents a value.

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, using the '=' sign.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for the variables and performing the operations.

Front

What is the order of operations?

Back

The order of operations is the rules that tell you the sequence to follow when performing calculations: 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 a factor?

Back

A factor is a number that divides another number evenly without leaving a remainder.

Front

What is a product?

Back

A product is the result of multiplying two or more numbers together.

Front

How do you use parentheses in math?

Back

Parentheses are used to group numbers or expressions together to indicate that the operations inside should be performed first.

Front

What does it mean to divide equally?

Back

To divide equally means to share a total amount into equal parts or groups.

Front

What is a variable?

Back

A variable is a symbol (often a letter) that represents an unknown number in an expression or equation.

Front

What is the difference between addition and subtraction?

Back

Addition is combining two or more numbers to get a total, while subtraction is taking one number away from another.