Converting Between U.S. Inches, Feet, and Yards. 9 Mystery Pictures with 27 Color by Code Math Worksheets. Each worksheet includes 10 unique problems. All pictures have a colored answer key. Directions: Solve the math problem, look at the color next to it, and then color in ALL of the squares that have that answer. Examples:108 inches = __ yards | Answer: 3 yards 9 feet = __ inches | Answer: 108 inches 13 yards = __ feet | Answer: 39 feet Please CLICK HERE to view other Math Mystery Picture