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One of the Oldest Devices Used for Calculation Is the Abacus

Question 29

Short Answer

One of the oldest devices used for calculation is the abacus, as shown in the sample figure. Each rod names one of the positions we use in counting. Each bead on the bottom represents one unit in that column and each bead on the top represents 5 units in that column. The number illustrated in the sample figure below is 1,734.
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Sample One of the oldest devices used for calculation is the abacus, as shown in the sample figure. Each rod names one of the positions we use in counting. Each bead on the bottom represents one unit in that column and each bead on the top represents 5 units in that column. The number illustrated in the sample figure below is 1,734. ​ Sample ​ What number is illustrated by the drawing? ​ ​
What number is illustrated by the drawing?
​ One of the oldest devices used for calculation is the abacus, as shown in the sample figure. Each rod names one of the positions we use in counting. Each bead on the bottom represents one unit in that column and each bead on the top represents 5 units in that column. The number illustrated in the sample figure below is 1,734. ​ Sample ​ What number is illustrated by the drawing? ​

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