Multiplication & Division CSI Mystery Worksheets
Grades 3–5 · The Missing School Bus
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Inside the case file
Multiplication and division facts practice, times tables CSI math worksheets, and fact fluency activities for 3rd grade, 4th grade, and 5th grade math are all included in this CSI Mystery Detective game. Students become math investigators as they work through multiplication facts, division facts, missing factor puzzles, and mixed operation challenges to eliminate suspects and track down the missing school bus. This engaging escape room style math activity is perfect for back to school, review, test prep, or independent practice and is completely no prep — just print and go.
Every clue is built on multiplication and division facts within 12 x 12, so students get times tables practice, fact family review, missing factor problems, and mixed operation puzzles woven through one story. A school bus has vanished from the depot, and only the math will reveal which one it was.
What's Inside
- Recalling multiplication facts through 12 x 12: 7 x 8, 11 x 5, 12 x 9
- Recalling the matching division facts: 56 ÷ 7, 96 ÷ 8, 132 ÷ 12
- Finding a missing factor or quotient to complete an equation
- Deciding whether a given answer is correct or incorrect and proving it
- Following a chain of multiplication and division steps to reach a final number
- Matching problems to answers and tracing a route through a number maze
- Complete answer keys included
- Full color and ink-saving black and white versions of every page
One full-length case to crack, with every clue building on the last.
What is a CSI Mystery Detective?
A CSI Mystery Detective is a print-and-solve math activity — like an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects, and reveal who did it. It combines real skill practice with critical thinking and a detective hook that keeps the whole class engaged.
When to Use This Resource
This multiplication and division CSI Mystery Detective can be used year-round for review, enrichment, or independent practice. Teachers love it for:
- Back to school math activities
- Math centers and small group rotations
- Morning work and early finishers
- Substitute teacher plans
- Times tables review before state testing
- Homework and end-of-year spiral practice
Grade Levels
Designed for 3rd grade, 4th grade, and 5th grade multiplication and division. Also beneficial for struggling 6th graders who still need fact fluency, or advanced 2nd graders who are ready for a challenge.
Why Teachers Love CSI Mystery Detective packs
- Feels like a math escape room but with no locks or tech required
- Detective-style storyline keeps students working through fact after fact
- Easy prep — simply print and go
- Self-checking, so students spot their own mistakes as the suspect list narrows
- Works well for independent practice, partners, small groups, or a whole class challenge
- Builds fact fluency, problem-solving, and critical thinking together
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