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3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
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3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center
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What others say

"My students love doing activities like this. They get competitive to see who can figure out “who done it” first. These are great resources to have!"
star
Lisa M.
"My students love escape rooms and this one kept them engaged. They were challenged and excited about solving the mystery."
star
Marcy H.

Description

Halloween Math Mystery: the Case of The Tricking Treat - 3rd Grade Edition

Your student detectives must complete the math worksheets to unlock essential clues to help them narrow down a list of spooky suspects! The last suspect on the list is the one who stole and used the tricking treats on the children!

Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.

For Troubleshooting Tips & FAQ please download my free support guide .

--------------------------------------------------------------------------------------------

An optional video hook is included for introducing the case!

BONUS: Ending video added to wrap up the case!

Click here to view == HALLOWEEN VIDEO HOOK == or check out in the preview section.

--------------------------------------------------------------------------------------------

Preparation

- No Prep required! Print the student pages, staple or place

in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the

lesson on an IWB, iPad or computer monitor screen.

-----------------------------------------------------------------------------------------------

Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

  • Clue 1: Multiplying by 2s and 5s
  • Clue 2: Rounding to the nearest 10 and 100
  • Clue 3: Addition algorithms with 1-digit and 2-digit numbers only. (No regrouping).
  • Clue 4: Area measured in unit squares
  • Clue 5: Multiply by 3s and 10s

Students must use critical thinking skills to determine what the clue is telling them to eliminate from the list of suspects.

----------------------------------------------------------------------------------------------

Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue, either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "We must learn something new before attempting the next clue."

-----------------------------------------------------------------------------------------------

How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format, as well as how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

-----------------------------------------------------------------------------------------------

If you would like more challenging math skills, select a higher grade level version of this mystery.

This Halloween Math Mystery activity is also available for the other grade levels listed below.

Differentiation and Important Note about the other Grade Editions when the Mystery is the SAME Story Title:

The clues are the same in the other grades if the mystery story is the same. The math is what is different between the grade packs. I designed the mysteries this way to differentiate the task within your classroom (without your kids knowingthey might have an easier or harder version than their peers.) You can also 'clue swap' across grades (except for the 1st grade version) as long as the clue number is the same if you find that you'd prefer the math skill for a particular clue from a different grade edition. For example, swap clue 3 from the 4th grade edition with clue 3 in the 5th grade edition and it will still work the same (just the math will be different). I've added an alternative suspect list to the pack to change the mystery outcome, including two pre-made lists for you to swap out if you want a different mystery solution.

There are many different mystery titles in my store available if you'd like more Math Mysteries with different clues and solutions.

Grade 1 - Case of the Tricking Treat

Grade 2 - Case of the Tricking Treat

Grade 3 - Case of the Tricking Treat

Grade 4 - Case of the Tricking Treat

Grade 5 - Case of the Tricking Treat

Grade 6 - Case of the Tricking Treat

Grade 7 - Case of the Tricking Treat

Grade 8 - Case of the Tricking Treat

----------------------------------------------------------------------------------------------

Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE

You may also like:

Thanksgiving Math Mystery: Case of The Gobbler's Curse (GRADE 3)

----------------------------------------------------------------------------------------------

Bundle and Save!

COMPLETE Math Mystery Bundle for GRADE 3

HOLIDAY Math Mysteries Bundle Pack GRADE 3

SKILLS Math Mystery Bundle (3rd Grade)

SEASONS Math Mystery Bundle Pack (GRADE 3)

----------------------------------------------------------------------------------------------------------------

Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Browse the 3rd Grade Range:

>>Download the FREE 3rd Grade Checklist here:<<

>> CLICK HERE to follow my store<<

-------------------------------------------------------------------------------------------------

For more ideas, activities, and resources, follow my store (by clicking the little green star) to stay updated on new releases. We can also stay connected via:

Blog

Pinterest

Facebook

_________________________________________________________________

>> CLICK HERE to follow my store <<

_________________________________________________________________

Thank you!

Mrs J.

© 2015

Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

3rd Grade Halloween Math Activity, Halloween Math Mystery Review CSI Math Center

Mrs J's Resource Creations
41.6k Followers
$4.95

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Digital downloads
Grades icon
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Answer Key
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What others say

"My students love doing activities like this. They get competitive to see who can figure out “who done it” first. These are great resources to have!"
star
Lisa M.
"My students love escape rooms and this one kept them engaged. They were challenged and excited about solving the mystery."
star
Marcy H.

Save even more with bundles

CSI Math Mysteries for the holidays! 3rd Grade Edition. These fun math mystery activities will get your students excited about doing math review! Save time and money with this Math Mystery HOLIDAY bundle for Grade 3!Easy prep! Just Print &amp; Solve! Or go paperless with the new Google Slides option
Price $96.70Original Price $138.15Save $41.45
28
Math Mysteries COMPLETE 3rd Grade Collection! This complete Math Mystery bundle contains all of my math mysteries for Grade 3 up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners.Easy prep! Just Print &amp; Solve! Or go pa
Price $235.43Original Price $336.35Save $100.92
72
Mrs. J's Math Mystery collection from 1st to 6th grade.Grab all of the math mysteries to engage and motivate your students and differentiate across grade levels! FAQ: Will I be adding more math mysteries to this bundle?A: Yes, I will add new 1st-6th Grade Math Mysteries to this bundle until it reach
Price $1046.48Original Price $1745.75Save $699.27
368

Description

Halloween Math Mystery: the Case of The Tricking Treat - 3rd Grade Edition

Your student detectives must complete the math worksheets to unlock essential clues to help them narrow down a list of spooky suspects! The last suspect on the list is the one who stole and used the tricking treats on the children!

Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.

For Troubleshooting Tips & FAQ please download my free support guide .

--------------------------------------------------------------------------------------------

An optional video hook is included for introducing the case!

BONUS: Ending video added to wrap up the case!

Click here to view == HALLOWEEN VIDEO HOOK == or check out in the preview section.

--------------------------------------------------------------------------------------------

Preparation

- No Prep required! Print the student pages, staple or place

in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the

lesson on an IWB, iPad or computer monitor screen.

-----------------------------------------------------------------------------------------------

Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

  • Clue 1: Multiplying by 2s and 5s
  • Clue 2: Rounding to the nearest 10 and 100
  • Clue 3: Addition algorithms with 1-digit and 2-digit numbers only. (No regrouping).
  • Clue 4: Area measured in unit squares
  • Clue 5: Multiply by 3s and 10s

Students must use critical thinking skills to determine what the clue is telling them to eliminate from the list of suspects.

----------------------------------------------------------------------------------------------

Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue, either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "We must learn something new before attempting the next clue."

-----------------------------------------------------------------------------------------------

How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format, as well as how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

-----------------------------------------------------------------------------------------------

If you would like more challenging math skills, select a higher grade level version of this mystery.

This Halloween Math Mystery activity is also available for the other grade levels listed below.

Differentiation and Important Note about the other Grade Editions when the Mystery is the SAME Story Title:

The clues are the same in the other grades if the mystery story is the same. The math is what is different between the grade packs. I designed the mysteries this way to differentiate the task within your classroom (without your kids knowingthey might have an easier or harder version than their peers.) You can also 'clue swap' across grades (except for the 1st grade version) as long as the clue number is the same if you find that you'd prefer the math skill for a particular clue from a different grade edition. For example, swap clue 3 from the 4th grade edition with clue 3 in the 5th grade edition and it will still work the same (just the math will be different). I've added an alternative suspect list to the pack to change the mystery outcome, including two pre-made lists for you to swap out if you want a different mystery solution.

There are many different mystery titles in my store available if you'd like more Math Mysteries with different clues and solutions.

Grade 1 - Case of the Tricking Treat

Grade 2 - Case of the Tricking Treat

Grade 3 - Case of the Tricking Treat

Grade 4 - Case of the Tricking Treat

Grade 5 - Case of the Tricking Treat

Grade 6 - Case of the Tricking Treat

Grade 7 - Case of the Tricking Treat

Grade 8 - Case of the Tricking Treat

----------------------------------------------------------------------------------------------

Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE

You may also like:

Thanksgiving Math Mystery: Case of The Gobbler's Curse (GRADE 3)

----------------------------------------------------------------------------------------------

Bundle and Save!

COMPLETE Math Mystery Bundle for GRADE 3

HOLIDAY Math Mysteries Bundle Pack GRADE 3

SKILLS Math Mystery Bundle (3rd Grade)

SEASONS Math Mystery Bundle Pack (GRADE 3)

----------------------------------------------------------------------------------------------------------------

Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Browse the 3rd Grade Range:

>>Download the FREE 3rd Grade Checklist here:<<

>> CLICK HERE to follow my store<<

-------------------------------------------------------------------------------------------------

For more ideas, activities, and resources, follow my store (by clicking the little green star) to stay updated on new releases. We can also stay connected via:

Blog

Pinterest

Facebook

_________________________________________________________________

>> CLICK HERE to follow my store <<

_________________________________________________________________

Thank you!

Mrs J.

© 2015

Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Reviews

4.9
Rated 4.89 out of 5, based on 1488 reviews
1488
ratings
5
1,365
4
119
3
4
2
0
1
0
Mostly used with 3rd grade
Reviews
48
568
171
61
21
14
12
2nd
3rd
4th
5th
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What customers are saying
Met expectations
100%
Is a great value
100%
Is standards-aligned
100%
All verified TPT purchases
Love These!
Rated 5 out of 5
June 1, 2026
Met expectations
Great value
Standards-aligned
I use these as review and this particular one was amazing for the days leading up to Halloween, which can be a little chaotic. I love edited the suspect/location list and adding my students or areas in our school!
Kate Marble
(TPT Seller)
201 reviews • Missouri
Grades taught: 4th
Student populations: Emerging bilinguals, Learning difficulties, Mild to severe disabilities
Great Resource
Rated 5 out of 5
May 20, 2026
My students love doing activities like this. They get competitive to see who can figure out “who done it” first. These are great resources to have!
Lisa M.
300 reviews • Indiana
Grades taught: 2nd, 3rd
Student populations: Autism, Learning difficulties, Mild to severe disabilities
Great Resource!
Rated 5 out of 5
May 10, 2026
Met expectations
Great value
Standards-aligned
My students love escape rooms and this one kept them engaged. They were challenged and excited about solving the mystery.
Marcy H.
300 reviews • Mississippi
Grades taught: 3rd
LOVE THESE
Rated 5 out of 5
April 20, 2026
Met expectations
Great value
Standards-aligned
I always come back to these! Great resource! Kids love them and always are so engaged!
amanda P.
312 reviews • Ohio
Grades taught: 3rd, 4th, 5th
Student populations: Learning difficulties, Mild to severe disabilities
Great Resource
Rated 5 out of 5
April 17, 2026
Met expectations
Great value
Standards-aligned
My students loved this resource! It was engaging and I loved the spiral review. I added an incentive to it for students who were able to solve first. The video added in for special effects engaged the students right off the start.
Morgan D.
196 reviews • Texas
Grades taught: 3rd, 4th
Student populations: Emerging bilinguals
Great Product
Rated 5 out of 5
March 4, 2026
Great resource for elementary school kids. Thank you!!
Julia T.
232 reviews • Kentucky
Grades taught: 3rd, 4th, 5th
Amazing resource
Rated 5 out of 5
February 24, 2026
Students were highly engaged in solving the math problems
steven Walker
(TPT Seller)
623 reviews • Outside the United States
Grades taught: 2nd
Great product ?
Rated 5 out of 5
February 21, 2026
Met expectations
Great value
Standards-aligned
Great product!Found it very useful in my classroom and my students learned alot.
Mary T.
494 reviews • Illinois
Grades taught: 3rd, 4th, 5th
Student populations: Learning difficulties

Questions & Answers

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Standards

to see state-specific standards (only available in the US).
Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
Use place value understanding to round whole numbers to the nearest 10 or 100.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
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