Divisibility by 18
A number that is divisible by 18 must be divisible by 2 and by 9. It also follows that numbers divisible by both 2 and 9 must be divisible by 18. Therefore, to find out if a number is divisible…
Division by 9
“Most of us want to avoid 9 in almost all calculations. But again, we can make calculations easier by thinking of 9 as the difference of 10 and 1, (10 – 1). This fact is particularly useful in division by…
The Difference of the Sums is the Sum of the Difference
This question was given in the Primary category in the 2nd MATH-Inic Vedic Mathematics National challenge held online last April 30, 2022. The conventional approach to this problem is of course, 1) perform the subtraction and 2) divide the difference…
Results of the 2nd MATH-Inic Vedic Mathematics National Challenge
Congratulations to the winners of the 2nd MATH-Inic Vedic Mathematics National Challenge held online last April 30, 2022. Here are the top three scorers in each category: Beginners (9 years old and younger) Jan Lemuel F. Zapanta, Barrio Obrero ES,…
Nikhilam or base multiplication
This question was given in the 2nd MATH-Inic Vedic Mathematics National Challenge held online last April 30, 2022, which drew 568 participants from all over the Philippines. Anyone who has a working knowledge of of Nikhilam or base multiplication can…