Engage your upper elementary students with a little mystery during their math hour with these place value mystery cards! Students work through a set of cards answering questions related to the place value of multi-digit numbers. Each answer brings them one step closer to solving the mystery! With this resource you'll get: ✓Addition and Subtraction of Multi-digit numbers in a variety of formats ✓Missing Numbers in Equations ✓Addition of More than Two sets of Numbers ✓Word Problems ✓Problem Solving practice ✓Practice the questions using not (such as which below is not a multiple of ...) ✓Answer keys ✓Recording Sheets ✓Mystery Clue Sheets ✓27 Problem Sheets ✓Color version and B/W version This resource is perfect for: ✓math centers ✓small groups ✓whole group activities ✓scoot ✓move around the room 🖨️Printing Notes🖨️: While I recommend printing in color and laminating materials for future use, it is not necessary. These materials print just fine in grayscale. I would suggest printing as image to avoid any potential issues. Additionally, download the resource to your computer, open it, and then print. Printing from your browser often creates problems. ☞Mistakes Happen!☜ If you see ANYTHING that needs modifying, or if you have any questions, please contact me via the Q&A. I take my product creation and your satisfaction very seriously! Thanks!