Vedic mathematics article 2: subtraction of numbers from 10, 100, 1000, 10 000, etc.

Vedic Maths Article 1: Multiplying two digit nymbers by 11
May 9, 2018
Vedic mathematics article 3:mental squaring of numbers between 10-20 by Rushern Chetty
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Vedic mathematics article 2: subtraction of numbers from 10, 100, 1000, 10 000, etc.