Parts of An Expression

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. For example, in the expression 4y + 2 + x, the constant is 2.

Front

How many terms are in the expression 3x + 2y + z?

Back

There are 3 terms in the expression: 3x, 2y, and z.

Front

How many terms are in the expression 3a + 2b + c + 100?

Back

There are 4 terms in the expression: 3a, 2b, c, and 100.

Front

What is a coefficient in an expression?

Back

A coefficient is a number that multiplies a variable. For example, in the term 3n, 3 is the coefficient.

Front

Identify a constant in the expression 3x + 2y + 7.

Back

The constant in the expression is 7.

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

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

Back

Count the number of separate parts in the expression that are added or subtracted. For example, in 4y + 2 + x, there are 3 terms.

Front

What is the difference between a variable and a constant?

Back

A variable is a symbol that represents an unknown value, while a constant is a fixed value. For example, in 4y + 2, y is a variable and 2 is a constant.

Front

What does it mean for a term 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

How do you combine like terms in an expression?

Back

To combine like terms, add or subtract their coefficients. For example, 3x + 5x = 8x.