This self-checking worksheet helps the student master the pre-algebra skills that is often forgotten during Algebra 2 and ACT time. The students will need to add like terms as well as work with positive and negative numbers. All the solutions have 7's: 7+7i or -7-7i or 7i or 7-7i and so on. The student will need to keep track of the 'i' term very carefully. When finished, the student will discover the solution to a position puzzle.