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The number 9 is the maximum number of beads on an abacus because it is the last number in the ones place before the tens place is reached.. The abacus is a tool that was used for arithmetic in ancient times. It is composed of a frame with a series of rods or wires on which beads are strung. The beads are used to represent numbers.
You can use an abacus to add and subtract quantities of beads by moving the them around. This can in turn help to solve equations involving counting numbers.
To make an abacus, the first thing to do is to make a frame, the wooden edge around an abacus. Then add the separator, the wooden line about 1/3 at the top and 2/3 at the bottom. And then start making the coloum for the beads. Your abacus will then look excactly like this original Chinese abacus picture:Frame: the wooden edges around an abacusSeparator: the wooden line that stretches from the left to the right side of the abacus which separates the top and bottom part of the abacusColoumns: the thin wooden sticks which holds the beadsBeads: The rounded wood for countingBy: ValerieUsername: Valerie_Limasi
An Abacus has beads and strings.
Beads
25=20,21,23
It has alote of rows with beads in them.
An Abacus
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ABACUS - Abundant Beads, Addition and Calculation Utility System
wood parrelel rod and beads
beads
If you are refering to Chinese abacus their earliest rudimentary design of abacus has 1/4 rod beads (quite similar to the later Japanese soroban abacus). Various other types of abacus design were also seen afterwards, but the advance type of 2/5 rod beads became standard and classic. Afterwards, the basic 1/5 rod beads particularly became the type of basic design. The Roman abacus may be not connected to the Chinese abacus.
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The difference is that an abacus uses beads to calculate. A calculater uses solar energy or batteries to make its digital numbers. In other words an abacus uses beads and a calculater uses buttons you press to put numbers on the calculaters screen.