## 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…