This FREE no-prep printable is a simple, fun way to practice double-digit subtraction. The grid mystery image is a color-by-number activity that reveals a cute snail - perfect for spring! The printable also has bonus practice - subtracting single-digits from double-digit numbers to decode a punchline to a joke/riddle. Great for independent work, sub plans, centers, morning work, early finishers, etc. in regular education classrooms, resource rooms, or other intervention settings! The worksheet i