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Kiwiland Education

4-Digit Addition with Regrouping | Math Mystery Worksheets | Grades 2–5 | Christmas Theme

$4.00 USD

Add a little holiday intrigue to addition practice. This printable set of Christmas 4-Digit Addition with Regrouping Math Mysteries wraps regrouping practice in five festive detective stories, built for Grades 2–5 classroom teachers, homeschool parents, and tutors who want focused practice your students will actually want to finish in December.

You get five separate one-page mysteries in a single download — perfect for the lead-up to the holidays, early finishers, or a no-prep festive activity. In each case, students read a short story, work through a set of 4-digit addition with regrouping problems, and use their answers to eliminate suspects until only one remains and the case is cracked. No apps, no prep, no fuss.

Quick Details

Grade Levels: Grades 2–5
Format: Printable PDF (color and black & white)
Resource Type: Math Mystery worksheets
Theme: Christmas
Math Skills: 4-digit addition with regrouping
Standards: Aligns with Common Core 4.NBT.B.4
Pages: 18 pages including answer keys
Best For: Christmas math, math centers, early finishers, morning work, sub plans, and homeschool math
Tech Needed: None — no apps, locks, passwords, or student logins required

The 5 Mysteries

This resource includes five separate one-page Christmas mysteries, each with its own detective story, problem set, and suspects to eliminate:

  • Who is Secret Santa
  • Christmas Cheer
  • Singing Christmas Carols
  • Missing Xmas Present
  • Turkey Trouble

Teacher Wins

  • No grading needed — a complete answer key is included for every mystery
  • Self-checking — students need accurate answers to eliminate the right suspects
  • No prep, no tech — just print and hand out
  • Works independently — students can solve each case solo, with a partner, or in small groups
  • One page per case — each mystery fits a single class session

Skills Covered

Students will practice:

  • 4-digit addition with regrouping
  • Carrying across the ones, tens, hundreds, and thousands
  • Place value accuracy in multi-digit addition
  • Using answers to eliminate suspects
  • Logic, reasoning, and checking work for accuracy

What's Included

  • Five color one-page Christmas Math Mysteries (4-digit addition with regrouping)
  • Black & white versions of the same mysteries
  • An answer key for every mystery
  • A print-and-go teacher instruction page and an early-finisher color page

Best Used For

This printable set of Math Mysteries works well for:

  • Christmas and December math activities
  • Math centers and early finishers
  • Morning work, warm-ups, and spiral review
  • Substitute teacher plans and homework
  • Small groups and independent work
  • Homeschool math
  • 4-digit addition with regrouping practice and reinforcement

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

How Math Mysteries Work

Each Math Mystery resource gives you five one-page cases that turn math practice into a clue-based investigation. Here's exactly how a case plays out.

CASE FILE 5 MYSTERIES

Every set is a ready-to-solve investigation

Students become the math detective. They read a story, crunch the numbers, and use their answers as evidence to rule out suspects — until only the culprit is left standing.

1
STEP 01

Read the Case

Each mystery opens with a short, themed story that sets the scene and tells students exactly what they're trying to find out — who took something, what went missing, or what really happened.

Hooks them in seconds
2
STEP 02

Solve the Problems

Students work through a set of problems built around the target skill. Every answer is a clue — so there's a real reason to get each one right.

Focused skill practice
3
STEP 03

Eliminate Suspects

Students match their answers against the suspect list and cross off names one clue at a time. Wrong math means the wrong suspect — so the activity self-checks as they go.

Self-checking built in
4
STEP 04

Crack the Case

One suspect is left — and students reveal who did it. The payoff makes review feel like a win, and they're ready to start the next case.

The satisfying reveal

See it in action

SOLVE A CLUEAnswer = 576
MATCH THE ANSWER576 = Bianca
CROSS OFFBianca
No apps. No logins. No prep. Just print, hand out, and let them investigate.

Why Teachers Use Math Mysteries

Skill practice that feels like a case worth solving — and a download that quietly does a lot of your planning for you.

5one-page cases per set
0prep or setup time
color & black-and-white
answer keys included

Five Mysteries in One

Every download includes five separate one-page cases — enough for a full week of practice, a center rotation, or a sub-day backup that's always ready to go.

Truly No-Prep

No cutting, laminating, apps, or logins. Print in full color or black-and-white and hand them straight out — that's the whole setup.

Self-Checking by Design

Students need the right answers to rule out the right suspects, so accuracy matters — and the included answer keys mean no grading for you.

Fits Any Routine

Use one case as a morning warm-up, or spread the five across the week for centers, partner work, early finishers, or intervention.

Keeps Students Hooked

The mystery format gives even reluctant mathematicians a reason to keep solving. Review starts to feel like a game, not another worksheet.

Differentiation-Friendly

Great for on-level practice, an extension for advanced students, or a targeted review pass for anyone who needs another go at the skill.

NO PREP PRINT & GO ANSWER KEYS INCLUDED

What's in every Math Mystery set

5 full-color mysteries 5 black-and-white versions 5 complete answer keys Print-and-go teacher page Bonus coloring page
Practice that feels like a case worth cracking.

Frequently Asked Questions About Math Mysteries

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

Is this Math Mystery a digital activity?

No. This is a printable PDF resource. Students complete the 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 Math Mystery straight away.

How do students solve the Math Mystery?

Each resource includes five one-page cases. In each one, students solve the math problems and use their answers to eliminate suspects until only one remains and the case is cracked.

Can this Math Mystery be used for sub plans?

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

Can this Math Mystery be used for homeschool?

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



Christmas 4-Digit Addition with Regrouping Math Mystery worksheets cover - 5 printable detective cases

4-Digit Addition with Regrouping | Math Mystery Worksheets | Grades 2–5 | Christmas Theme

$4.00

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