Sandra buys 70 pencils with fuzzy tops. She gives 4 to each of her 15 classmates. The expression for the number of pencils she has left is 70 – (4 • 15). Answer each question to identify the parts of the expression. 1. In this expression, what does 70 represent?

2. What does (4 • 15) represent?
3. Is the expression 70 – (4 • 15) a difference of three terms, a product of two terms, or a difference of two terms? Identify the terms in the expression.