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 does it mean to evaluate an expression?

Back

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

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width, represented as A = length × width.

Front

What is a variable in an equation?

Back

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

Front

What is the solution of an equation?

Back

The solution of an equation is the value of the variable that makes the equation true.

Front

How do you solve a one-step equation?

Back

To solve a one-step equation, perform the inverse operation to isolate the variable on one side of the equation.

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 a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression, such as in 4x, where 4 is the coefficient.

Front

What does it mean to combine like terms?

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 constant in an expression?

Back

A constant is a fixed value that does not change, such as the number 5 in the expression 3x + 5.