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"Great resource, low prep, easy to use, and fun! Thank you for sharing this! Highly recommend to other teachers!"

Brandie K.

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"My students loved this resource! They were engaged and were able to complete the tasks with ease."

Gina H.

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"I have enjoyed every purchase I've made from your store. The students are always so engaged!"

Karen C.

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Kiwiland Education

Multiplication & Division CSI Math Mystery Worksheets | Grades 4–6 | Halloween School Witch

$4.00 USD

Need a no-prep way to review multiplication and division basic facts? This Multiplication & Division CSI Math Mystery gives 4th, 5th, and 6th grade students a fun Halloween-themed way to practice key math skills while solving the School Witch case.

Students work through clue pages, solve multiplication and division problems, and use their answers to eliminate suspects. It feels like a detective investigation, but still gives students focused practice with basic facts, 4-digit addition with regrouping, and rounding numbers.

Quick Details

Grade Levels: 4th, 5th, and 6th grade (also great for advanced 3rd graders or struggling 6th graders)
Format: Printable PDF
Pages: 16 pages including answer key
Resource Type: CSI Math Mystery worksheets
Math Skills: Multiplication, division, 4-digit addition with regrouping, rounding, and problem solving
Best For: Math centers, sub plans, early finishers, review, small groups, and homeschool math
Tech Needed: None — no apps, locks, passwords, or student logins required

Case Summary

Everyone knows that your school is haunted by witches. Weird things have been happening lately — lost pens, broken rulers, messy books, missing whiteboard markers, and worst of all, wrong maths on the board. It could only be the witches. Students must solve the clues to discover which mischievous witch is responsible!

Skills Covered

Students will practice:

  • Multiplication facts up to 12
  • Division facts up to 12
  • 4-digit addition with regrouping
  • Recall of basic addition and subtraction facts
  • Rounding numbers to the nearest 10, 100, and 1000
  • Using answers to eliminate suspects
  • Careful calculation and problem solving

What's Included

  • CSI-style math mystery activity
  • Multiplication and division clue pages
  • Suspect elimination activity
  • Answer key included
  • Print-and-go PDF format

Best Used For

This printable Halloween CSI Math Mystery works well for:

  • Halloween math activities
  • Back-to-school and end-of-year review
  • Math centers and early finishers
  • Substitute teacher plans
  • Small groups and independent work
  • Homeschool math
  • Multiplication and division fact review

How CSI Math Mysteries Work

  1. Read the Case – Students begin with a short mystery scenario and find out what needs to be solved.
  2. Solve the Clues – Each clue gives students focused math practice using the target skill.
  3. Eliminate Suspects – Students use their answers to remove suspects from the investigation one clue at a time.
  4. Crack the Case – By the end, only one suspect remains and students reveal the answer to the mystery.

No apps, locks, passwords, or student logins required. Just print and go.

Please Note

This is a printable PDF resource. No physical item will be shipped.

Downloadable Resource

All of our products are digital downloads — no physical items will be shipped.

  • After purchase, you'll receive an email with a download link within minutes.
  • Make sure to check your spam or promotions folder if you don't see it right away.
  • If you experience any issues accessing your files, please contact us and we'll help you promptly.

Our Guarantee

Due to the nature of digital products, all sales are final. We do not offer refunds or exchanges once a file has been downloaded. However, if you encounter any problems with your download or the product itself, please reach out — we're happy to assist.

Thank you from Kiwiland Education

All of our products are digital downloads — no physical items will be shipped.

  • After purchase, you’ll receive an email with a download link within minutes.
  • Make sure to check your spam or promotions folder if you don't see it right away.
  • If you experience any issues accessing your files, please contact us and we’ll help you promptly.

Due to the nature of digital products, all sales are final.

We do not offer refunds or exchanges once a file has been downloaded.

However, if you encounter any problems with your download or the product itself, please reach out — we're happy to assist.

  • Thank you from Kiwiland Education

"Great resource, low prep, easy to use, and fun! Thank you for sharing this! Highly recommend to other teachers!"

Brandie K.

Verified buyer

"My students loved this resource! They were engaged and were able to complete the tasks with ease."

Gina H.

Verified buyer

"I have enjoyed every purchase I've made from your store. The students are always so engaged!"

Karen C.

Verified buyer

How CSI Math Mysteries Work

CSI Math Mysteries turn regular math practice into a clue-based investigation. Students solve problems, use their answers as evidence, and eliminate suspects until the case is solved.

1

Read the Case

Students begin with a short mystery scenario and find out what needs to be solved.

2

Solve the Clues

Each clue gives students focused math practice using the target skill for that resource.

3

Eliminate Suspects

Students use their answers to remove suspects from the investigation one clue at a time.

4

Crack the Case

By the end, only one suspect remains and students can reveal the answer to the mystery.

No apps, locks, passwords, or student logins are required. Just print and go.

Why Teachers Use CSI Math Mysteries

CSI Math Mysteries turn skill practice into a clue-based investigation students want to solve. They are easy to prep, flexible for different classroom routines, and help students practice math skills while using logic, reasoning, and careful problem solving.

Teacher-Friendly Review

Practice that feels like a mystery, not another worksheet.

CSI Math Mysteries help students stay focused by turning skill practice into a clue-based case. They are easy to prep, simple to use, and flexible enough for busy classroom routines.

No-Prep and Print-and-Go

Use the pages right away for review, math centers, sub plans, small groups, early finishers, or homeschool math.

Encourages Careful Thinking

Students need accurate answers to eliminate suspects, which encourages checking, reasoning, and attention to detail.

Easy to Fit Into Lessons

Use a full mystery in one session or split the clues across centers, partner work, intervention, or review rotations.

Builds Student Confidence

The mystery format gives students a clear purpose for practicing math skills and helps make review feel more rewarding.

CSI Math Mysteries combine focused math practice with problem solving, logic, and a detective-style task that students can complete independently or with support.

Frequently Asked Questions For CSI Math Mysteries

Printable CSI Math Mystery worksheets that turn math practice into clue-based detective investigations.

Is this CSI Math Mystery a digital activity?

No. This is a printable PDF resource. Students complete the CSI Math Mystery on paper. No physical item will be shipped.

Do students need apps, locks, passwords, or logins?

No. Students do not need apps, locks, passwords, or logins. Teachers can print the pages and use the CSI Math Mystery straight away.

How do students solve the CSI Math Mystery?

Students solve math clues and use their answers to eliminate suspects. Each correct answer helps them narrow down the case until only one suspect remains.

Can this CSI Math Mystery be used for sub plans?

Yes. CSI Math Mysteries work well for sub plans because students can work through the clues independently, with a partner, or in small groups.

Can this CSI Math Mystery be used for homeschool?

Yes. This printable CSI Math Mystery can be used for homeschool lessons, tutoring, review practice, enrichment, or extra math support.

Will this work for early finishers or math centers?

Yes. CSI Math Mysteries are a good fit for early finishers, math centers, small groups, independent work, review lessons, and extra practice activities.

Recommended Products

Keep students practicing key math skills with more clue-based printable CSI Math Mystery worksheets.

Halloween multiplication and division CSI math mystery worksheets for 4th 5th and 6th grade – School Witch case cover

Multiplication & Division CSI Math Mystery Worksheets | Grades 4–6 | Halloween School Witch

$4.00

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