Skip to content

Welcome guest

Please login or register
Skip to product information

"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

Kiwiland Education

Multiplying Decimals CSI Math Mystery Worksheets | Grades 4–7 | Zombie Apocalypse

$4.50 USD

Transform decimals review into a detective investigation your students won't want to put down. A zombie is loose somewhere in the school, and your class has to figure out who before it's too late. This printable Multiplying Decimals CSI Math Mystery is built for Grades 4–7 classroom teachers, homeschool parents, and tutors who want focused math practice wrapped in a story students actually care about solving.

Students work through a series of clue pages, use their answers to eliminate suspects, and race to crack the case — all while getting meaningful practice with multiplying and adding decimals. No apps, no prep, no fuss.

Quick Details

Grade Levels: Grades 4–7 (best for 5th–6th; great for GATE and enrichment)
Format: Printable PDF
Resource Type: CSI Math Mystery worksheets
Math Skills: Multiplying decimals, adding decimals to 2 places, 2-digit multiplication, multiplying by 10s and 100s
Pages: 16 pages including answer key
Best For: Halloween, math centers, sub plans, early finishers, enrichment, small groups, and homeschool math
Tech Needed: None — no apps, locks, passwords, or student logins required

Case Summary

The unthinkable has happened: a zombie apocalypse has broken out, and it started right inside your school. Somewhere among the teachers and students, one of them has turned — and it's up to your class, the C.S.I. team, to figure out exactly who.

Every suspect is logged on the evidence chart: teacher or student, fast or slow, the reading on the "smell-o-meter," and the number of brains eaten. The only way to match the clues to the culprit is to do the math, one decimal at a time.

Clue by clue, students multiply and add their way through the evidence — multiplying decimals, working with two-digit numbers, and scaling by 10s and 100s. Each correct answer crosses another name off the suspect list, until just one remains and the zombie is finally unmasked.

Hand your students the evidence, point them at the suspects, and let them prove they can crack the case. The math is the only thing standing between them and the truth.

Skills Covered

Students will practice:

  • Multiplying decimals
  • Adding decimals to two decimal places
  • Multiplying two-digit numbers
  • Multiplying by 10s and 100s
  • Using answers to eliminate suspects
  • Logic, reasoning, and problem solving

What's Included

  • CSI-style math mystery activity
  • Decimal multiplication and addition clue pages
  • Suspect chart and elimination activity
  • Answer key
  • Print-and-go PDF format

Best Used For

This printable CSI Math Mystery works well for:

  • Halloween and October math activities
  • Math centers and early finishers
  • Substitute teacher plans
  • GATE, gifted, and enrichment
  • Small groups and independent work
  • Homeschool math
  • Decimal and multiplication practice

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.

Zombie Apocalypse multiplying decimals CSI Math Mystery cover for grades 4 to 7

Multiplying Decimals CSI Math Mystery Worksheets | Grades 4–7 | Zombie Apocalypse

$4.50

Your Cart

THANK YOU FOR SHOPPING

Your Cart is empty
Let's fix that

You might like...

Search our store

Your Wishlist