This is a worksheet, where students have to identify whether each expression is, overall, positive or negative.
It contains 50 questions on one concise but very tidily presented sheet. It's clear and straightforward, and practice makes perfect.
There are easy questions to start, and then it later progresses to more challenging towards the end.
See picture 1 to get an idea of the layout, and pictures 2, 3 and 4 to get an idea of the style of questions contained on the sheet.
Please note: The values of x and y are given in this worksheet.