Addition and Subtraction CSI Detective Math Mystery Worksheets | Missing Stationery

Transform math practice into an exciting adventure! This printable CSI Math Mystery is perfect for engaging 2nd, 3rd, and 4th-grade students in mastering 3-digit addition with regrouping, and essential multiplication and division basic facts. Get ready to boost problem-solving skills and math fluency with this no-prep, fun activity!

About This Math Mystery: The Missing Stationery Case!

Your students will become junior math detectives in this thrilling investigation! The school's stationery has vanished, and it's up to them to crack the case. They'll dive into multiplication and division fact problems and 3-digit addition puzzles, solving 5 unique math clues. With each correct answer, they'll eliminate suspects until the stationery thief is finally revealed! It's an immersive way to make math lessons unforgettable.

What's Inside This Printable Case File?

This comprehensive math activity provides targeted and enjoyable practice with:

• Adding single digits to 3-digit numbers with regrouping
• Subtracting 2-digit numbers from 100
• 3-digit addition with regrouping
• Multiplication facts 0-12
• Division facts up to 144 (including bonus challenges like $100 \div 20$)

Why Teachers & Students Love Our CSI Math Mysteries:

• Versatile Learning: Ideal for 2nd, 3rd, and 4th graders. Also great for supporting struggling 5th-grade students needing addition and subtraction reinforcement, or for challenging advanced 2nd graders.
• No Prep, Pure Fun: These printable escape-room-style activities require zero locks or apps. Simply download, print, and you're ready for an engaging lesson!
• Flexible Use: Perfect for back-to-school activities, math review sessions, engaging substitute teacher activities, or just a fun math break anytime of year – including after summer, winter, autumn/fall, and spring breaks!
• Boosts Key Skills: Designed to enhance engagement, problem-solving, and math fluency in an exciting, independent format. Students solve themed math clues to eliminate suspects and crack the case!

Please Note: This is a digital download (printable PDF product). No physical item will be shipped.

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