Expressions and Equations

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equal sign (=).

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. They can be combined by adding or subtracting their coefficients.

Front

How do you simplify an expression?

Back

To simplify an expression, combine like terms and perform any operations to reduce it to its simplest form.

Front

What does it mean to combine like terms?

Back

Combining like terms means to add or subtract terms that have the same variable and exponent.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a factor across a sum.

Front

What is the coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.

Front

What is a variable?

Back

A variable is a symbol, often a letter, that represents an unknown value in mathematics.

Front

What is the process of evaluating an expression?

Back

Evaluating an expression involves substituting values for the variables and performing the operations to find the result.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width (A = length × width).