---
product_id: 288519776
title: "Libro Studio LLC Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems"
price: "Rp463263"
currency: IDR
in_stock: true
reviews_count: 5
url: https://www.desertcart.id/products/288519776-libro-studio-llc-humble-math-100-days-of-timed-tests
store_origin: ID
region: Indonesia
---

# Digits 0-20 practice 100 days of timed tests Addition & subtraction drills Libro Studio LLC Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems

**Price:** Rp463263
**Availability:** ✅ In Stock

## Summary

> ⏳ Boost your child’s math fluency before the next school year!

## Quick Answers

- **What is this?** Libro Studio LLC Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems
- **How much does it cost?** Rp463263 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/288519776-libro-studio-llc-humble-math-100-days-of-timed-tests)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Top-Rated & Trusted:** 4.8-star rating from over 6,000 parents and educators
- • **Reproducible Practice:** Endless worksheets for consistent skill reinforcement
- • **Targeted for Ages 5-8:** Perfectly tailored for early elementary learners
- • **Master Math in 100 Days:** Daily timed drills build speed and confidence
- • **Comprehensive Digit Range:** Covers addition and subtraction with numbers 0-20

## Overview

Libro Studio LLC Humble Math offers 100 days of timed addition and subtraction tests designed for children ages 5-8. Featuring reproducible practice problems with digits 0-20, this workbook enhances math fluency through daily drills. Highly rated by thousands of users, it’s a proven tool to build confidence and speed in early math skills.

## Description

Buy Libro Studio LLC Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems by Math, Humble online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Effective for practicing, progression of levels is well structured
Review: Great for math practice. Variety of questions and difficulty levels. Excellent to use over summer when school is out!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #37,293 in Books ( See Top 100 in Books ) #738 in Children's Books on Math #1,999 in Science, Nature & Math #2,806 in Activity Books for Children |
| Customer reviews | 4.8 4.8 out of 5 stars (6,161) |
| Dimensions  | 21.59 x 0.61 x 27.94 cm |
| Edition  | Illustrated |
| Grade level  | Kindergarten - 2 |
| ISBN-10  | 1635783003 |
| ISBN-13  | 978-1635783001 |
| Item weight  | 292 g |
| Language  | English |
| Print length  | 110 pages |
| Publication date  | 3 November 2019 |
| Publisher  | Libro Studio LLC |
| Reading age  | 5 - 8 years |

## Images

![Libro Studio LLC Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems - Image 1](https://m.media-amazon.com/images/I/61zsyCx4y-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***K on 26 September 2023*

Effective for practicing, progression of levels is well structured

### ⭐⭐⭐⭐⭐ Review
*by A***R on 22 September 2025*

Great for math practice. Variety of questions and difficulty levels. Excellent to use over summer when school is out!

### ⭐⭐⭐⭐ Review
*by S***M on 13 August 2025*

I didn't realise it would all be one digit sum rather than double digit.

## 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.id/products/288519776-libro-studio-llc-humble-math-100-days-of-timed-tests](https://www.desertcart.id/products/288519776-libro-studio-llc-humble-math-100-days-of-timed-tests)

---

*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-03-17*