Miss Adamson has four classes with 20 students each. She makes a study guide for her class and uses 5 sheets of paper per student. How many sheets of paper will she use for all of her students?
Miss Adamson has a total of 4 x 20 = <<4*20=80>>80 students.
Thus, she will use 80 x 5 = <<80*5=400>>400 sheets of paper for all of her students.
#### 400