This engaging set of 5 self checking digital worksheets is perfect for independent practice, homework, exit slips and review! Students answer 10 questions on each worksheet. As the questions are answered, they will turn green if the answer is correct or red if the answer is incorrect. With each correct answer, more and more of a mystery picture appears! This set includes 5 worksheets and cover the following topics: Greatest Common FactorLeast Common Multiple GCF and LCM Prime and Composite Numbe