Percentage Increase AndDecrease Worksheet Ks3. A worksheet, in the word’s original meaning, is a sheet of paper where one performs work. It’s a printed page that a child completes with a writing instrument. No other materials are necessary. It’s”a sheet of paper where workouts, working time, special instructions, etc. are listed. A piece or scrap of paper on which issues, thoughts, or the like, are put down in tentative form.” In schooling, a worksheet could have questions for students and areas to record responses. In accounting, a worksheet is, or has been, a sheet of ruled paper with rows and columns where an accountant may record data or perform calculations.