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Earn +20 ptsQ: How do you use a nine bead abacus?
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What are the two parts of an abacus?
The upper part of an abacus consists of one bead each that has the value of 'five'. The lower part of an abacus consists of four beads and each of them has value 'one'. All the beads in one grid together add up to the value 'nine'.
What is the minimum number of bars on an abacus?
The minimum number of bars on an abacus is nine. An abacus is a calculating tool that was used before the written numeral system came into use. It is still used by merchants and traders in countries in Asia and Africa.
What did they use before calculators?
The Abacus
What did people use before calculators?
The Abacus
Who was the first to use an abacus?
your uncle face p
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