About 432,000 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. Home - Abacus Group

    Abacus Group is an executive job recruitment firm, specializing in the permanent placement and temporary staffing of professionals

  3. About | Abacus Group

    Founded in 2008, Abacus Group is a global managed IT and Cybersecurity service provider with specialized cloud, compliance and IT-as-a-Service offerings built specifically for the financial …

  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. 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 …

  6. The Abacus and the Numeral Frame - Smithsonian Institution

    The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines. The instrument may have …

  7. 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 …

  8. Abacus - Math is Fun

    An abacus has beads that slide on rods. ... It can be used to count, add, subtract, multiply and more. ... Slide 3 beads UP on the right-most column 1 bead UP on the 2nd-from-right

  9. 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 …

  10. 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 …