an abacus.Abacuses are so fast and accurate that people still use them today.On the abacus in the picture,the beads on the wires represent ones,tens,hundreds and thousands starting from the bottom wire.The picture on the right shows a modern electronic calculator.It can add,subtract,multiply...
An abacus was a precursor to the calculator, as it was a device used to make mathematical calculations before technology became more advanced. The device is composed of a frame intersected with rows of wires. These wires are strung with beads. These beads can be slid across the wire to sep...
The abacus is usually made of wood.It has many beads (珠子). Each rod (竿)stands for a different digit (数位). The rightmost is ones, the second is tens, the third is hundreds, and so on. Each bead in the central area has a value. In the past, the use of the abacus was taug...
In China, people use abacuses to do calculations for thousands of years before electronics calculators became popular.The abacus is usually made of wood. It has many beads (珠子). Each bead above the horizontal(水平的) divider stands for five, and each bead below the divider stands for one...
Get yourself an abacus. Once you have the apparatus, familiarize yourself with the structure. The beads on the top are worth five times the value as the beads on the bottom. The beads on the bottom are assigned values arbitrarily. In the right most column, beads may be assigned a value ...
an abacus.Abacuses are fast and accurate.On theabacus,the beads on the wires stand for ones,tens,hundreds and thousands,starting from the bottom wire.The abacus in the picture shows a number.Writeit down in figures and then in words.Multiply it by zero and then add 1.Whatis the answer?
an abacus.Abacuses are so fast and accurate that people still use them today.On the abacus in the picture,the beads on the wires represent ones,tens,hundreds and thousands starting from the bottom wire.The picture on the right shows a modern electronic calculator.It can add,subtract,multiply...
an abacus.Abacuses are so fast and accurate that people still use them today.On the abacus in the picture,the beads on the wires represent ones,tens,hundreds and thousands starting from the bottom wire.The picture on the right shows a modern electronic calculator.It can add,subtract,multiply...
In China, people used abacuses to do calculations for thousands of years. The abacus is usually made of wood.It has many beads (珠子). Each rod (竿)stands for a different digit (数位). The rightmost is ones, the second is tens, the third is hundreds, and so on. Each bead in the...
However, merchants who traded goods needed a more comprehensive way to keep count of the many goods they bought and sold. The abacus is one of many counting devices invented in ancient times to help count large numbers, but it is believed that the abacus was first used by the Babylonians ...