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  1. Abacus - Wikipedia

    Abacus-based mental calculation (AMC), which was derived from the abacus, is the act of performing calculations, including addition, subtraction, multiplication, and division, in the mind …

  2. How to Use an Abacus (with Pictures) - wikiHow

    Aug 6, 2025 · The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world. It's a useful learning device for the visually …

  3. Abacus | Definition, History, Origin, & Facts | Britannica

    Nov 17, 2025 · Abacus, calculating device, probably of Babylonian origin, that was long important in commerce. It is the ancestor of the modern calculating machine and computer. The abacus …

  4. Amazon.com: Abacus

    Abacus,Soroban, Abacus for Adults, Professional 13 Column Abacus for Math with Reset Button,Digits and Educational Learning Tool (9.8 inch) Add to cart

  5. What is Abacus and How Does It Work? A Complete Guide

    Mar 28, 2025 · What is an Abacus? An abacus is a manual calculating device made of a wooden or plastic frame with rods and beads. Each bead represents a number, and moving them helps …

  6. ABACUS Definition & Meaning - Merriam-Webster

    Probably of Babylonian origin, an abacus is a calculating instrument that uses beads that slide along a series of wires or rods set in a frame to represent the decimal places. It is the ancestor …

  7. Abacus - New World Encyclopedia

    An abacus (plurals abacuses or abaci), also called a counting frame, is a calculating tool for performing arithmetical processes, often constructed as a wooden frame with beads sliding on …

  8. Abacus Explained — Everything You Need To Know - History Tools

    Nov 8, 2023 · This comprehensive guide will explain what an abacus is, how it works, its fascinating history, why it remains popular today, and how learning abacus calculation can …

  9. The History of the Abacus: From Ancient Mesopotamia to Modern …

    May 20, 2025 · The abacus represents more than just an ancient calculating tool; it’s a window into thousands of years of human innovation, cultural exchange, and the universal human …

  10. What is an Abacus? – ABACUS

    Jan 3, 2025 · Often called a “counting frame,” the abacus is a simple yet powerful device that helps perform basic mathematical operations such as addition, subtraction, multiplication, and …