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The Math Sleuths: A Math Mystery Detective Case File with Addition & Subtraction Practice for Kids Ages 8-12 (Beginner Level - 10 Mysteries. Volume 1)
Paperback
General Juvenile FictionMathematics
Publisher: Independently Published
Published: Aug 28 2026
Pages: 114
Weight: 0.62
Height: 0.24 Width: 8.50 Depth: 11.00
Language: English
Your kid can do the math. Getting them to want to - that's the mystery.
You've seen the worksheet stare-down. The sighing. The this is boring. It's not that they can't add and subtract - it's that a page of problems gives them zero reason to care. So what if every problem they solved actually unlockedsomething?
Meet The Math Sleuths.
At the neighborhood farmers market, something's always going a little sideways - and Nico, Ria, Agent G, and their pocket gadget PIP are on the case. But there's a catch: every clue is locked, and it takes Effort Tokens to unlock it. The only way to earn them? Solve the math.
Inside all 10 cases, your young detective will:
- Solve real 2- and 3-digit addition & subtraction - with and without regrouping - to earn Effort Tokens
- Trade Effort Tokens to unlock each clue and move the case forward
- Fill in their own suspect grid, crossing off suspects one by one until only the answer remains
- Reflect in a Detective Notebook after each case, building the mindset that mistakes are part of good detective work - never failures
By the final cases, your detective is cracking missing-number puzzles and word problems - the quiet on-ramp to bigger math, disguised as the toughest case in the book.
Built for the whole 8-12 range. Whether your kid is racing ahead or needs math to finally click, the mystery pulls them in and the addition-and-subtraction practice does the quiet work underneath. Screen-free. Story-driven. Secretly rigorous.
The Math Sleuths - where every clue counts, and every answer is one step closer to solving the case.
A math mystery detective case file for kids ages 8-12 - Beginner Level: Addition & Subtraction within 1,000 - Includes regrouping & word problems - 10 full cases to crack.
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