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Kiwiland Education

Halloween CSI Math Mystery Addition and Subtraction Worksheets

$4.50 USD

🧙 Looking for a spooky Halloween math activity? This Halloween-themed CSI Math Mystery, The Witch’s Potion, will engage your 2nd, 3rd, and 4th grade students with fun 3-digit addition and subtraction challenges. Perfect for October math centers, fall-themed lessons, and back-to-school review, this printable math mystery activity is sure to spark excitement in your classroom.

In this detective-style escape room activity, students must solve addition and subtraction puzzles to eliminate suspects and crack the case. A witch’s magical ingredients have gone missing, and only your students can help her identify who stole them!


This math mystery includes:

  • Subtraction from 100 of 2-digit numbers

  • 3-digit addition with regrouping

  • Mixed 3-digit addition and subtraction

  • Multi-digit addition

  • Word problems with regrouping

  • Full-color and black-and-white versions for easy printing

  • Complete answer keys


🧪 This math mystery makes a great Halloween classroom activity, substitute plan, early finisher task, or spiral review. It’s ideal for reinforcing key skills while keeping students engaged with a seasonal storyline. Many teachers also use it as a back-to-school refresher or independent enrichment task for gifted learners.

🎃 Whether used in October or year-round, The Witch’s Potion brings a unique blend of math practice and storytelling to your classroom.


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    Halloween CSI math mystery printable featuring 3-digit addition and subtraction puzzles

    Halloween CSI Math Mystery Addition and Subtraction Worksheets

    $4.50

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