What's hiding in this mystery picture? Kids solve subtraction problems up to 35 to unlock the secret image, one colored section at a time! This engaging color-by-number worksheet makes practicing math feel like solving a puzzle — the reward is a fun surprise revealed right on the page. Perfect for sharpening subtraction skills while keeping little hands busy and creative minds engaged. Great for classroom use or quiet time at home, this free printable PDF is ready whenever you need it. Just download, print, and let your child discover what's hidden inside. A wonderful way to blend math practice with artistic fun for kids ages 6 and up!