Parts of an Expression

Front

What is a coefficient?

Back

A coefficient is a numerical factor that multiplies a variable in an expression. For example, in 3n, 3 is the coefficient.

Front

What is a constant in an expression?

Back

A constant is a number that does not change and has no variable attached to it. For example, in the expression 3x + 5, 5 is a constant.

Front

What is a variable?

Back

A variable is a symbol, usually a letter, that represents an unknown value in an expression. For example, in 3x + 2, x is the variable.

Front

How many terms are in the expression 4a + 5b + 6?

Back

There are 3 terms in the expression: 4a, 5b, and 6.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operations (like addition and multiplication) that represents a value.

Front

Identify the terms in the expression 2x + 3y - 4.

Back

The terms are 2x, 3y, and -4.

Front

What does it mean for terms to be 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

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign and represents a value, while an equation states that two expressions are equal.

Front

What is a polynomial?

Back

A polynomial is an expression that consists of variables raised to whole number powers and their coefficients, such as 2x^2 + 3x + 1.

Front

What is the degree of a term?

Back

The degree of a term is the exponent of the variable in that term. For example, in 4x^3, the degree is 3.