Students will find the missing term in algebraic expressions by expanding brackets. There are 16 questions, and eight of them have two terms with one variable. And the other eight has three terms with one variable. Students are given the answers along with one term or two terms, respectively, and must determine the missing one to make the expression complete and match the answer provided. Correct answers will turn green; incorrect answers will turn red. This self-grading activity provides students with immediate feedback on their learning and is great for revision or assessment. It is available in Google Sheets and a PDF. An answer key is provided.