Description

Get spooky with this Halloween Math Mystery 3rd Grade activity! ‘The Case of the Halloween Heist’ is a high-engagement October math activity that makes reviewing rounding and place value far more exciting than a standard worksheet.

It’s the perfect no-prep math activity! This resource is loaded with options, including an optional video hook to set the stage!

Easy Prep for Print or Digital

This resource is designed to be low-prep for you and high-engagement for your students.

• Printable PDF Version: Just print the worksheets, staple, and go.
• Google Slides Digital Version: 100% paperless! Simply assign in Google Classroom. (Students must be in ‘edit mode’ to type).

Halloween Math Mystery 3rd Grade Activity

To find the stolen candy, students must unlock five clues by correctly solving a complete math review:

• Clue 1: Multiplication Facts (2s, 5s, and 10s)
• Clue 2: Place Value Models (Hundreds, Tens, and Ones)
• Clue 3: Telling Time (O’Clock, Half-Past, Quarter-Past, Quarter-To)
• Clue 4: Addition of Double-Digit Numbers (With Regrouping)
• Clue 5: Rounding (To the nearest 10 or 100)

Flexible for Any 3rd Grade Classroom

Use this versatile Halloween math worksheets alternative for:

• A fun spiral review
• Math centers or stations
• Homework or enrichment
• Your “early finisher” tub
• A lifesaver for your sub-tub!

Pacing & Timing

This is a comprehensive review that can take anywhere from 30 minutes to 2+ hours, depending on your students’ skill level. We recommend pacing it by one clue at a time.

Common Questions for this 3rd Grade Math Review

Q: What skills does this mystery cover?
A: This mystery focuses on Rounding, Place Value Models, and Telling Time. (If you need different skills, check out our other Halloween Mystery below!)

Q: Is this too scary for school?
A: Not at all! The “Heist” is about stolen candy treats. It captures the fun atmosphere of Halloween without being frightening.

Q: How does differentiation work with these?
A: That’s our secret weapon! Many of our stories are available for other grades, so you can “clue swap” with the 2-6 grade packs. We even have a blog post explaining how: learn how to differentiate here.

Your 3rd Grade Halloween Hub

Don’t stop at just one mystery! Check out our other 3rd Grade Halloween Math Mysteries (covering different skills!):

• The Case of The Jumpy Jack-O-Lanterns (Covers Word Problems & Patterns)
• The Case of The Tricking Treat (3rd Grade)
• See Other 3rd Grade Math Mysteries

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A complete answer key and printable awards are included!