Question

Which are butterfly fingers in Abacus

Answer 1

Answer:

don't know

mark me as brainlest and take free 3points

Answer 2

Answer:

Decimal numbers are called butterfly number in abacus.

Decimal numbers are called butterfly number in abacus.Centuries before adoption of Hindu–Arabic numeral system the abacus, also known as counting frame, a calculating tool was used in the ancient Near East, China, Europe and Russia. It contains a string with beads that are used for counting.