Complete answer key for the Operation Investigator worksheet, designed to fill exactly two 8.5 x 11 paper pages. Features clear, large solution cards for all five problems (including 2-step) and a robust scoring tracker for teacher data collection. Optimized for vertical space utilization and consistent visual hierarchy. Reworded logic for problems 4 and 5 to match updated worksheet. Fixed layout to prevent content cutoff. Standardized labels and borders. Units added to final results. Padding increased for report headers.
