Ghost mental arithmetic or ゴースト暗算

Are you good at math? If so, can you do this by mental arithmetic?

62×7=

I was surprised to see that some kids answered this very quickly in a study room at a juku, cram school in Tokyo. An instructor of this juku is Kuniaki Iwanami, a medical school student at Tokyo University. Kuniaki invented his original “ghost anzan” method that enables you to get the answer fast and now he has set up an education company. It was reported by NHK.

Kuniaki emphasizes that with his method you can also do 2-digits ×２-digits multiplication until 99×99 by mental arithmetic.

Speaking of 2-digit multiplication, it is widely known that many kids in India memorized the multiplication table all the way to 19 × 19 as part of math education at school. The reason why India has become such an IT expert country is supposed to be their high arithmetic ability trained from their childhood.

“I think that a basic ability of calculating is one of backgrounds to raise resources like IT engineers. I’m convinced this when I worked at a juku as a part-time instructor. There were a lot of kids who said they didn’t like math, and if we leave the situation as it is, it would surely cause a crisis in the advancing technology nation.” Kuniaki added.

Kuniaki provides us with two courses to master “ghost mental arithmetic” for both kids and senior. I hope it’s not too late to activate my brains.

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