---
product_id: 43588015
title: "The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries)"
brand: "melinda thielbar"
price: "€ 15.24"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.fi/products/43588015-the-lost-key-a-mystery-with-whole-numbers-manga-math
store_origin: FI
region: Finland
---

# The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries)

**Brand:** melinda thielbar
**Price:** € 15.24
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries) by melinda thielbar
- **How much does it cost?** € 15.24 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/43588015-the-lost-key-a-mystery-with-whole-numbers-manga-math)

## Best For

- melinda thielbar enthusiasts

## Why This Product

- Trusted melinda thielbar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries)

## Images

![The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries) - Image 1](https://images-na.ssl-images-amazon.com/images/I/51V2Z-PTdfL.jpg)
![The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries) - Image 2](https://images-na.ssl-images-amazon.com/images/I/516r27vCvqL.jpg)
![The Lost Key: A Mystery with Whole Numbers (Manga Math Mysteries) - Image 3](https://images-na.ssl-images-amazon.com/images/I/41OMPAEmL3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Cute book
  

*by K***B on Reviewed in the United States on December 9, 2020*

Cute book. I loved how it made math with whole numbers interesting and fun. The characters were drawn very nicely.

### ⭐⭐⭐ 







  
  
    Manga math
  

*by M***Y on Reviewed in the United States on March 31, 2020*

I liked this book it teaches you pretty well But it is only good if you are actually still learning 3rd grade math.

### ⭐⭐⭐⭐⭐ 







  
  
    Educational
  

*by K***R on Reviewed in the United States on July 21, 2020*

Nice for people who like math :D I do recommend this book to people.... Worth it to read! I like it

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**Shop now:** [https://www.desertcart.fi/products/43588015-the-lost-key-a-mystery-with-whole-numbers-manga-math](https://www.desertcart.fi/products/43588015-the-lost-key-a-mystery-with-whole-numbers-manga-math)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-07*