This product is a math mystery that is aligned with the 5th-grade Engage NY/Eureka math curriculum. This focuses on reviewing important skills learned at the beginning of the school year which include long division, metric conversions, 4x2 and 3x2 multiplication, addition/subtraction of decimals to the thousandth place, and multiplication/division of base 10 exponents. This product provides the students with a brief scenario introducing the fact that someone has stolen Santa's sleigh, a suspect list, five clues which will each narrow the suspect list down until only one is left and an answer key.