Simplifying Expressions

Front

What is an expression in mathematics?

Back

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

Tags

CCSS.6.EE.A.2B

Front

What does it mean to simplify an expression?

Back

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

Tags

CCSS.7.EE.A.1

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.

Tags

CCSS.6.EE.A.2B

Front

What is a coefficient?

Back

A coefficient is a numerical factor in a term. For example, in 4x, 4 is the coefficient.

Tags

CCSS.6.EE.A.2B

Front

What is a constant term?

Back

A constant term is a term that does not contain any variables. For example, in the expression 3x + 5, 5 is the constant term.

Tags

CCSS.6.EE.A.2B

Front

How do you add two expressions?

Back

To add two expressions, combine like terms by adding their coefficients.

Tags

CCSS.7.EE.A.1

Front

What is the sum of (−3x + 7) + (2x − 5)?

Back

The sum is −x + 2.

Tags

CCSS.7.EE.A.1

Front

What is the sum of (3x + 15) + (4x + 13)?

Back

The sum is 7x + 28.

Tags

CCSS.7.EE.A.1

Front

What is the coefficient of the 3rd term in the expression 3x - 1 + 4x - 10?

Back

The coefficient is 4.

Tags

CCSS.6.EE.A.2B

Front

What is the constant term in the expression -4x + 5 + 10x - x²?

Back

The constant term is 5.

Tags

CCSS.6.EE.A.2B