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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."

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

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Kiwiland Education

Multiplication & Division CSI Mystery Worksheets | Grades 3–5 | The Missing School Bus

$4.50 USD

Multiplication and division facts practice, times tables CSI math worksheets, and fact fluency activities for 3rd grade, 4th grade, and 5th grade math are all included in this CSI Mystery Detective game. Students become math investigators as they work through multiplication facts, division facts, missing factor puzzles, and mixed operation challenges to eliminate suspects and track down the missing school bus. This engaging escape room style math activity is perfect for back to school, review, test prep, or independent practice and is completely no prep — just print and go.

Every clue is built on multiplication and division facts within 12 x 12, so students get times tables practice, fact family review, missing factor problems, and mixed operation puzzles woven through one story. A school bus has vanished from the depot, and only the math will reveal which one it was.

What's Inside

  • Recalling multiplication facts through 12 x 12: 7 x 8, 11 x 5, 12 x 9
  • Recalling the matching division facts: 56 ÷ 7, 96 ÷ 8, 132 ÷ 12
  • Finding a missing factor or quotient to complete an equation
  • Deciding whether a given answer is correct or incorrect and proving it
  • Following a chain of multiplication and division steps to reach a final number
  • Matching problems to answers and tracing a route through a number maze
  • Complete answer keys included
  • Full color and ink-saving black and white versions of every page

One full-length case to crack, with every clue building on the last.

What is a CSI Mystery Detective?

A CSI Mystery Detective is a print-and-solve math activity — like an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects, and reveal who did it. It combines real skill practice with critical thinking and a detective hook that keeps the whole class engaged.

When to Use This Resource

This multiplication and division CSI Mystery Detective can be used year-round for review, enrichment, or independent practice. Teachers love it for:

  • Back to school math activities
  • Math centers and small group rotations
  • Morning work and early finishers
  • Substitute teacher plans
  • Times tables review before state testing
  • Homework and end-of-year spiral practice

Grade Levels

Designed for 3rd grade, 4th grade, and 5th grade multiplication and division. Also beneficial for struggling 6th graders who still need fact fluency, or advanced 2nd graders who are ready for a challenge.

Why Teachers Love CSI Mystery Detective packs

  • Feels like a math escape room but with no locks or tech required
  • Detective-style storyline keeps students working through fact after fact
  • Easy prep — simply print and go
  • Self-checking, so students spot their own mistakes as the suspect list narrows
  • Works well for independent practice, partners, small groups, or a whole class challenge
  • Builds fact fluency, problem-solving, and critical thinking together

Love this resource?

Follow Kiwiland Education to discover more CSI Mystery Detective packs, multiplication and division activities, and detective-themed stories for elementary classrooms.

Thank you

Kiwiland Education

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

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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.

New to the format? Read What Is a Math Mystery? for how they work and how to run one in class.

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.

More like this

From Back to School Activities

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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.

Multiplication and division mystery detective no-prep printable worksheets grades 3-5

Multiplication & Division CSI Mystery Worksheets | Grades 3–5 | The Missing School Bus

$4.50

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