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

Summer School CSI Math Mystery – Addition and Subtraction Worksheets

$4.50 USD

Need a fun way to keep students engaged during summer school or end-of-year math review? This Summer CSI Math Mystery targets addition and subtraction with regrouping, offering a printable, no-prep math game that’s ideal for 3rd grade, 4th grade, and 5th grade students.

As students solve puzzles involving 2-digit and 3-digit numbers, they eliminate suspects and uncover who caused the summer chaos. Perfect for classrooms, homeschool, and summer enrichment programs.

What’s Included:

  • Adding multiple 2-digit numbers

  • 3-digit addition with regrouping

  • Subtraction from 1000

  • 3-digit subtraction with regrouping

  • Printable worksheets (color and black & white)

  • Full answer key

Math Mysteries are independent escape room or crack-the-code types of fun math activities where students identify suspects using puzzles and word problems instead of locks. This summer-themed edition makes math review exciting and stress-free.

Thank you

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.

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

  • Thank you from Kiwiland Education

Recommended Products

Explore more printable math mystery worksheets and CSI-style activities for engaging skill review.

Summer School CSI math mystery for 3rd–5th grade addition and subtraction

Summer School CSI Math Mystery – Addition and Subtraction Worksheets

$4.50

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