This color-by-number activity is a great resource for students of all ages to practice and/or demonstrate basic math skills. Includes: - printable PDF coloring sheet - answer keys (full and partial color versions) Perfect for: - Halloween-themed activity - math centers - sub binder activity - early finishers Math skills used for this activity: - addition and subtraction (within 100) - basic multiplication and division - identify common factors of numbers (for coloring)