Expressions Vocabulary

Front

What are like terms in an expression?

Back

Like terms are terms that have the same variable raised to the same power. For example, -3x and -8x are like terms because they both contain the variable x.

Front

How do you determine the number of terms in an expression?

Back

To determine the number of terms in an expression, count the number of distinct parts separated by plus (+) or minus (-) signs. For example, in -18y + 7yz - 4z, there are 3 terms.

Front

What is the Associative Property in mathematics?

Back

The Associative Property states that the way in which numbers are grouped in addition or multiplication does not change their sum or product. For example, 7 + (11 + 10) = (7 + 11) + 10.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. It stands alone without any variable attached to it.

Front

Identify the constant in the expression 8r + 3.

Back

The constant in the expression 8r + 3 is 3.

Front

What is a variable in an expression?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.

Front

What is the difference between coefficients and constants?

Back

Coefficients are numerical factors that multiply variables in an expression, while constants are standalone numbers without variables.

Front

How do you combine like terms in an expression?

Back

To combine like terms, add or subtract the coefficients of the terms that have the same variable. For example, -3x and -8x combine to -11x.

Front

What is a polynomial?

Back

A polynomial is an expression that consists of variables raised to whole number powers and their coefficients, combined using addition, subtraction, and multiplication.

Front

What is the degree of a polynomial?

Back

The degree of a polynomial is the highest power of the variable in the expression. For example, in 4x^3 + 2x^2 - x, the degree is 3.