### GCSE Maths

Numbers
Algebra
Geometry and Measures
Probability
Statistics

# Algebraic Vocabulary

To better understand the topic of algebra, it’s essential to become familiar with a few key terms:

• Constant – A value or number that never changes in an equation, e.g., 4 is a constant because it is a value that doesn’t change.
• Equation – A combination of terms or values that uses an equal sign to show a balanced relationship, e.g., is an equation.
• Index– A small number written on the upper right-hand side of a number or variable, often referred to as an exponent or power. It can also be written as , where b is the exponent, e.g., in the term , 2 is the exponent.
• Expression – A combination of values and operations that can be used to show relationships and comparisons between elements, e.g., is an expression. Remember, expressions do not have an equal sign.
• Factor – To consolidate two or more terms into a single term to perform further operations, e.g., .
• Operation – An action performed on one or two numbers to produce a resulting number, e.g., multiplication, addition, subtraction, division, square root, and more.
• Simplify – To combine all that can be combined by collecting like-terms, reducing the equation to its simplest form, e.g., .
• Solve – To work out or find the answer to a problem or equation.
• Term – A combination of one or more factors, which can include numbers and/or variables, e.g., is a term, and the expression has 2 terms.
• Variable – Often represented by letters that stand for unknown numbers, e.g., in the term , is the variable, as it is a value that does not have a fixed value.