Description
Try the format teachers love with this Free Math Mystery 3rd Grade activity! ‘The Case of the Super Bad Superhero’ is a high-engagement math review that lets you test-drive the Math Mystery system in your classroom completely risk-free.
Discover why thousands of teachers use these mysteries to make math fun! This freebie includes all the premium features of our paid mysteries, including an optional video hook and a NEW ending video (with voiceovers!) to wrap up the case!
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).
- Easel by TPT: Complete the worksheets digitally for seamless online learning.
Free Math Mystery 3rd Grade Activity
To unmask the “Super Bad Superhero,” students must unlock five clues by correctly solving a mixed math review:
- Clue 1: Expanded Form (Converting numbers to standard form)
- Clue 2: Addition (2-digit and 3-digit numbers)
- Clue 3: Subtraction (2-digit and 3-digit numbers)
- Clue 4: Multiplication Facts (Focus on 2s and 5s)
- Clue 5: Division (Dividing by 2)
Perfect for a Risk-Free Trial
Use this free math activity to see if Math Mysteries work for your students. It’s great for:
- A fun Friday afternoon activity
- Testing if your students enjoy the “Gamified” format
- Math centers or stations
- Homework or enrichment
- A zero-cost sub-plan!
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 Freebie
Q: Is this a “lite” version?
A: No! This is a full-sized Math Mystery with 5 complete clues, a video hook, an ending video, and answer keys. We want you to experience the full quality of our resources.
Q: What skills does this mystery cover?
A: It is a Mixed Review covering Place Value (Expanded Form), Basic Operations (+, -, x), and introductory Division. It provides a great snapshot of 3rd-grade skills.
Q: How does differentiation work with these?
A: That’s our secret weapon! Even this freebie is available for other grades! You can download the free versions for 2nd, 4th, or 5th grade and “clue swap” to differentiate. Learn how to differentiate here.
Ready for More?
If your students loved solving this case, check out our 3rd Grade Math Mystery Resources for year-round fun!
A complete answer key and printable awards are included!








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