Printable 6th Grade Integer Worksheets + Escape-Room Excitement! This Monster Mummies CSI Math Mystery lets students practice adding and subtracting positive and negative numbers while cracking a spooky archaeological case. Ideal for 6th grade math (advanced 5th) and a solid review for 7th–9th grades, it doubles as a Halloween math centre, spiral review, sub plan, test-prep boost, or 6th-grade end-of-year check / 7th-grade back-to-school refresher—no prep, just print and go. The Story – Awa