Parts of an Expression

Front

What is a coefficient in an expression?

Back

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

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change and does not have a variable attached. For example, in the expression 3x + 4, 4 is a constant.

Front

How many coefficients are in the expression 3x + 2y + 7?

Back

There are 2 coefficients: 3 (for x) and 2 (for y).

Front

How many terms are in the expression 7y + 3 - 7k - 2?

Back

There are 4 terms: 7y, 3, -7k, and -2.

Front

What is a term in an expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both, separated by addition or subtraction.

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. For example, in 3x, x is the variable.

Front

What is the difference between a term and a coefficient?

Back

A term is a complete part of an expression, while a coefficient is the numerical part of a term that multiplies a variable.

Front

Identify the constant in the expression 5x + 10.

Back

The constant is 10.

Front

In the expression 4a + 3b - 2, how many terms are there?

Back

There are 3 terms: 4a, 3b, and -2.

Front

What does it mean for an expression to be simplified?

Back

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