Writing and Solving Expressions Flashcard

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 variable in an expression?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression. For example, in the expression 2y, y is the variable.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. For example, in the expression 4x - 5, -5 is the constant.

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

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the operations.

Front

What does it mean to solve an expression?

Back

To solve an expression means to find the value of the expression by substituting the variables with their given values.

Front

What is the expression for '4 times a number n, minus 7'?

Back

The expression is 4n - 7.

Front

If x = 2 and y = 4, what is the value of 3x + y + 5?

Back

The value is 15.

Front

If x = 2 and y = 5, what is the value of 4x + 3y - 20?

Back

The value is 3.

Front

How many terms are in the expression 2y + y + x - 5?

Back

There are 4 terms in the expression.