Question

D. Answer the following questions.
1. What do you understand by abacus? Why do you think it is an important
calculating device?​

Answer 1

Answer:

Explanation:The abacus, also called a counting frame. We can't imagine counting without numbers, but there was a time when no written numbers. ... This simple calculating device helped to count large numbers and use of both parts of brain, thus helping a child from converting from intelligent to genius

Answer 2

Abacus is a frame containing wires with small balls that move along them. It is used for counting.

The abacus, also called a counting frame. We can't imagine counting without numbers, but there was a time when no written numbers. ... This simple calculating device helped to count large numbers and use of both parts of brain, thus helping a child from converting from intelligent to genius.