Question

what is the basic rule of using an abacus scale?​

Answer 1

Answer:

This is your answer for your question

Answer 2

Answer:

Reading a number on the abacus. Reading it is almost like reading a written numeral. The five beads below the bar each have a value of 1. The two beads above the bar each have a value of 5. The beads which are pushed against the bar represent the number.