About 451,000 results
Open links in new tab
  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. Plumber Houston 713-766-3605 Abacus Plumbing, Air …

    Many plumbing problems are not DIY types of jobs, call Abacus so one of our licensed plumbers can fix your problem. Our plumbers are not only knowledgeable but their customer service …

  4. 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 …

  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. Amazon.com: Abacus

    Abacus for Kids Math - Wooden Abacus with 100 Counting Sticks and 112 Math Cards, Counting Toys for Preschool Learning, Educational Math Toys for Developing Fine Motor Skills, Math …

  7. Abacus - New World Encyclopedia

    An abacus(plurals abacusesor 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. What Is an Abacus? - Computer Hope

    Sep 7, 2025 · Meaning of the abacus, a mechanical device for performing mathematical calculations, its history, usage today, benefits of learning it, and usage instructions.

  9. 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 …

  10. 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 …