--- product_id: 120519245 title: "Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems" price: "AR$29876" currency: ARS in_stock: true reviews_count: 13 url: https://www.desertcart.com.ar/products/120519245-humble-math-100-days-of-timed-tests-addition-and-subtraction store_origin: AR region: Argentina --- # Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems **Price:** AR$29876 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems - **How much does it cost?** AR$29876 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/120519245-humble-math-100-days-of-timed-tests-addition-and-subtraction) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description An answer key is included in the back of this book, so students can check their answers easily. A few minutes of practice a day can help students tremendously. This workbook has over 100 days of reproducible addition and subtraction practice problems for digits 0-20. Use these pages as timed tests to improve fluidity or let students complete them at their leisure. Review: Fantastic math series! - review after 4 years - My son started this math book series 4 years ago, a few months after he turned 5, when he was in kindergarten. He began with this book (Addition & Subtraction) and has been working through the series ever since, about 1-2 pages a day. Now, at age 9, he’s completed 9 books in the series, including topics like fractions, long division, and area and volume. He quickly passed his grade level in math and just kept going! I truly believe these books helped him get into the gifted class. His classmates even call him a “math genius,” and he’s so proud of himself. Now he started learning algebra, while reviewing other topics he has completed. This book doesn’t have much explanation on how to solve each problem, so I do need to teach him sometimes - but he rarely struggles. I think it’s very well designed for introducing new concepts to young kids in a simple and natural way. What I love most is how this daily habit has boosted his confidence and attitude toward learning. Spending just 10-20 minutes a day taught him that small efforts can make a big difference. I highly recommend this series - just encourage your child to do one page a day. It’s a simple routine that brings lasting results, both academically and personally! Review: Math - Great for kids struggling with Math!! I remember these as a child and my kids love it.. ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #2,044 in Books ( See Top 100 in Books ) #3 in Popular & Elementary Arithmetic (Books) #26 in Children's Arithmetic Books #29 in Education Workbooks (Books) | | Customer Reviews | 4.8 out of 5 stars 6,436 Reviews | ## Images ![Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems - Image 1](https://m.media-amazon.com/images/I/61zsyCx4y-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fantastic math series! - review after 4 years *by B***Y on November 7, 2025* My son started this math book series 4 years ago, a few months after he turned 5, when he was in kindergarten. He began with this book (Addition & Subtraction) and has been working through the series ever since, about 1-2 pages a day. Now, at age 9, he’s completed 9 books in the series, including topics like fractions, long division, and area and volume. He quickly passed his grade level in math and just kept going! I truly believe these books helped him get into the gifted class. His classmates even call him a “math genius,” and he’s so proud of himself. Now he started learning algebra, while reviewing other topics he has completed. This book doesn’t have much explanation on how to solve each problem, so I do need to teach him sometimes - but he rarely struggles. I think it’s very well designed for introducing new concepts to young kids in a simple and natural way. What I love most is how this daily habit has boosted his confidence and attitude toward learning. Spending just 10-20 minutes a day taught him that small efforts can make a big difference. I highly recommend this series - just encourage your child to do one page a day. It’s a simple routine that brings lasting results, both academically and personally! ### ⭐⭐⭐⭐⭐ Math *by C***N on May 6, 2026* Great for kids struggling with Math!! I remember these as a child and my kids love it.. ### ⭐⭐⭐⭐⭐ This company did a great job with the book! *by H***E on April 28, 2026* My kids love these. They are done well, simple and exactly what the book says they are. ## Frequently Bought Together - Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems - Humble Math - 100 Days of Timed Tests: Multiplication: Grades 3-5, Math Drills, Digits 0-12, Reproducible Practice Problems - Humble Math - 100 Days of Timed Tests: Division: Grades 3-5, Math Drills, Digits 0-12, Reproducible Practice Problems --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/120519245-humble-math-100-days-of-timed-tests-addition-and-subtraction](https://www.desertcart.com.ar/products/120519245-humble-math-100-days-of-timed-tests-addition-and-subtraction) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-21*