About Abacus calculating device
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Answered by
2
tóp ís value of 5
and bottom four has value 1
you want to 5
up beat go bottom
and bottom four has value 1
you want to 5
up beat go bottom
Answered by
2
The abacus also called a counting frame, is a calculating tool that was used un Europe, China and Russia, centuries before the adoption of written hindu arabic numeral system.
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Drishti2326:
Thanks for selecting my answer as the brainliest.
wlcm..
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