Question

in Abacus 9 add 3 subtract 5 add 4 with explanation ​

Answer 1

Step-by-step explanation:

Arrange the Abacus: The beads of the abacus will be in its original position that means no beads will touch the reckoning bar. And showing the number zero.

Zero position/ Initial position of Abacus

B. Assign each vertical rod the place name: The rightmost rod named as Ones followed by tens, hundreds, and so on.

We can also assign a decimal place. If we want to represent a decimal number such as 10.5 then the rightmost column will be the tenth place, earlier it was one’s place and followed by the place of the whole numbers such as ones and tens.