They can already do single-digit 'carrying' smoothly. However, when it comes to 2-digit problems, their fingers stop at 42 + ...
In this article, I will introduce how much my daughter Hina-chan, who started abacus at age 4, was able to do in 3 months, ...
Ayushi works as Chief Copy Editor at Digit, covering everything from breaking tech news to in-depth smartphone reviews. Prior to Digit, she was part of the editorial team at IANS.
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