Parts of an Expression

Front

What is a variable in an expression?

Back

A symbol that represents an unknown value, often denoted by letters such as x, y, or z.

Front

Identify the coefficient in the expression 5x + 3.

Back

The coefficient is 5, which is the number multiplying the variable x.

Front

How many terms are in the expression 4a + 2b - 3c + 7?

Back

There are 4 terms in the expression.

Front

What is the definition of 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 the role of a constant in an expression?

Back

A constant is a fixed value that does not change, such as the number 7 in the expression 3x + 7.

Front

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

Back

Count the numbers that are directly multiplying the variables in the expression.

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 factor of a term that contains a variable.

Front

In the expression 2x + 3y - 5, how many variables are present?

Back

There are 2 variables: x and y.

Front

What is the significance of the '+' and '-' signs in an expression?

Back

They indicate the operation of addition or subtraction between terms.

Front

How can you simplify the expression 3x + 2x?

Back

By combining like terms, you get 5x.