Winter Addition & Subtraction CSI Mystery Worksheets

Inside the case file

Are you looking for a fun and engaging winter math activity to reinforce addition and subtraction? This Frozen Classroom CSI Mystery Detective is perfect for 2nd, 3rd, and 4th grade students who need practice with 3-digit addition and subtraction, including regrouping. Ideal for winter math lessons, post-winter break review, and early finisher tasks, this detective-themed math packet adds excitement to January and February learning!

Storyline:

Goosebumps appear on your skin as you enter the classroom. Icicles hang from the furniture. Your pencils are frozen together. Who did this? Become a math detective and follow the trail of frosty clues to eliminate suspects and solve the mystery of the frozen classroom!

What's Included:

• Subtraction from 100 of 2-digit numbers
• 3-digit addition with regrouping
• Addition and subtraction with 3-digit numbers
• Multi-digit addition
• Word problems with addition and subtraction
• Answer sheets included
• Full-color and black & white versions for printing flexibility

These no-prep printable worksheets are perfect for:

• Winter math centers
• Math review after winter break
• Early finishers
• Substitute teacher plans
• Engaging homework or enrichment

CSI Mystery Detective packs are a classroom escape-room style activity where students crack the case using math problems instead of locks. Fun, effective, and standards-aligned—your students won't even realize they're practicing key math skills!

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Thank you

Kiwiland

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