Addition & Subtraction Within 1000

Name: Addition & Subtraction Within 1000 | Zombie Mystery | Grades 2–4 | Detective Mystery
Brand: Kiwiland Education
SKU: 14180152
Price: 4.0 USD
Availability: InStock

Zombie Mystery · Grades 2–4 · Detective Mystery

Grade 2Grade 3Grade 4Grades 2-4Answer keys included

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Self-checkingEvery right answer clears a suspect. A wrong answer matches nobody.

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Inside the case file

Give your students engaging practice with addition and subtraction within 1,000 using this fun, zombie-themed Mini Mystery Detective! Perfect for 3-digit addition and subtraction with regrouping, these printable worksheets are designed for math review, fluency building, and problem-solving all year long. Use them for back-to-school review, Halloween math activities, spiral review, test prep, or end-of-year practice. Students solve vertical 3-digit addition and subtraction problems and use their answers to eliminate possibilities and solve the mystery, turning skill practice into a logic challenge they'll enjoy.

Mystery Detective cases are an independent escape room (or crack the code) style activity where, instead of opening locks, students solve puzzles and math problems to eliminate suspects and ultimately solve the case. This format combines the excitement of a mystery with the rigor of computation practice, keeping students motivated and on-task.

This resource includes five printable Mini Mystery Detective sets - two addition-only, two subtraction-only, and one mixed addition and subtraction set - giving you flexible ways to target specific skills or mix them for review. Every set features 16 unique problems with answers between 100-999 and an answer list containing one extra "fake" answer for built-in self-checking.

The zombie mystery theme adds excitement without limiting you to October - it's just as effective for fall, winter, spring, or summer review.

What's Included In These Mystery Detectives:

5 zombie-themed printable Mystery Detective sets
2 sets: 3-digit addition only
2 sets: 3-digit subtraction only
1 set: mixed addition and subtraction

Skills Covered:

Addition within 1,000 with regrouping
Subtraction within 1,000 with regrouping
Math fluency and accuracy
Logical reasoning and elimination strategy
Error checking and self-correction

Perfect For:

Back-to-school math review
Halloween math worksheets
End-of-year spiral review
Math centers and rotations
Morning work or bell ringers
Early finishers
Homeschool math practice

These addition and subtraction within 1,000 Mystery Detective math worksheets are no-prep and ready to use - just print, hand out, and let the mystery-solving begin.

Please Note: This is a printable PDF file. You will receive a download link for all 5 sets. No physical product will be shipped.

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