Evaluating Expressions with Variables

Which of the following is NOT one of the four main mathematical operations?

How would you write the expression 'three more than a number' using a variable?

What is the correct way to write the product of 12 and a number in algebra?

Which of the following is NOT a correct way to write the product of 12 and a number?

How should you write the quotient of a number and 3 in algebra?

What does the phrase 'less than' indicate in a mathematical expression?

How would you correctly write 'five less than a number'?

Which subtraction keyword requires special attention because it is read backwards?

When evaluating expressions, what should you use to replace variables?

If m = 3 and n = 5, what is the value of the expression 15 * m?