Answer:
an oblong frame with rows of wires or grooves along which beads are slid, used for calculating.
Explanation:
Abundant Beads, Addition and Calculation Utility System. It is a counting frame. It is used as a calculating tool. Earlier it was popular in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system.
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Answers & Comments
Answer:
an oblong frame with rows of wires or grooves along which beads are slid, used for calculating.
Explanation:
Answer:
Abundant Beads, Addition and Calculation Utility System. It is a counting frame. It is used as a calculating tool. Earlier it was popular in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system.
Explanation: