Expressions Test Prep

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 simplify an expression?

Back

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

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms.

Front

How do you combine like terms?

Back

You combine like terms by adding or subtracting their coefficients. For example, 3x + 5x = 8x.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by each term inside a parenthesis.

Front

What is the value of the expression 2(3 + 4)?

Back

The value is 14, calculated as 2 * 3 + 2 * 4.

Front

How do you evaluate an expression with given values for variables?

Back

To evaluate an expression, substitute the given values for the variables and perform the operations.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does. An equation states that two expressions are equal.

Front

What is the process to find the difference between two expressions?

Back

To find the difference, subtract one expression from the other.

Front

What is the value of the expression 4x - 5 when x = 3?

Back

The value is 7, calculated as 4(3) - 5.