WRITING AND EVALUATING EXPRESSIONS

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 5n + 2 is an algebraic expression.

Front

What does the variable 'n' represent in the expression 5n + 2?

Back

In the expression 5n + 2, 'n' represents a number that can change or vary, often referred to as a variable.

Front

How do you evaluate the expression 5n + 2 for n = 3?

Back

To evaluate 5n + 2 for n = 3, substitute 3 for n: 5(3) + 2 = 15 + 2 = 17.

Front

If Ms. Boggs purchased p pencils, how many pencils did Mr. Gollow purchase if he bought triple as many?

Back

Mr. Gollow purchased 3p pencils.

Front

What is the expression for the total number of people that can sit at t tables if each table seats 10 people?

Back

The expression is 10t.

Front

What is the sum of 14 and x represented as an expression?

Back

The sum is represented as 14 + x.

Front

If Mr. O'Neal has 165 comic books and acquires 8 new comics each month, what is the expression for the total number of comic books after m months?

Back

The expression is 165 + 8m.

Front

How many comic books will Mr. O'Neal have after 3 months if he starts with 165?

Back

After 3 months, he will have 189 comic books.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.