Need an engaging way to review decimal operations in your classroom? This printable CSI Math Mystery, Alien Invasion, targets key 5th grade math skills, including adding, subtracting, multiplying, and rounding decimals to the hundredths place. It’s an ideal resource for decimal review, math test prep, or independent math practice during any part of the year. Students solve a series of decimal-based puzzles and eliminate suspects to crack the case of the alien invasion. Whether you’re tea