Question

What do you understand by abacus?

Answer 1

Answer:

type of maths

Explanation:

abacus:

it is a type of math which is easy to calculate numbers

shape :

rectangle

use:

made up of beads which is easy to use

way of use:

we should use by pushing beads ups and downs

based on tens

Answer 2

Answer:

Abacus is considered as the first calculating device. it is invented in China . it was used to perform simple mathematical operations such as addition , subtraction, multiplication , and division.