Comments on: Divisible by 4 http://memorymentor.com/blog/vedic-maths/75/ Improve memory, multiply sums like a genius, Personal Development Wed, 03 Dec 2008 06:15:23 +0000 http://wordpress.org/?v=2.3.1 By: Kevin http://memorymentor.com/blog/vedic-maths/75/#comment-236 Kevin Wed, 05 Mar 2008 22:06:01 +0000 http://memorymentor.com/blog/vedic-maths/75/#comment-236 Hi Jim, thank you for your clear instructions. It's a great method you've described and I hope others will like it too. Hi Jim,

thank you for your clear instructions. It’s a great method you’ve described and I hope others will like it too.

]]> By: Jim http://memorymentor.com/blog/vedic-maths/75/#comment-234 Jim Tue, 04 Mar 2008 22:13:20 +0000 http://memorymentor.com/blog/vedic-maths/75/#comment-234 Since 100 is evenly divisible by 4, you can simply look at the last 2 digits. If that number is divisible by 4, then the entire number is as well. Most people are fairly good at determining if a two-digit number is divisible by 4. But if you are not: divide the 2-digit number in half and then see if you are able to divide it evenly in half again (in other words, "is the result of dividing that 2-digit number in half an even number?"). For example: Is 1234 divisible by 4? Most people can look and see that 34 is not divisible by 4, so 1234 is not divisible by 4. Otherwise, 34/2=17 and 17 is not an even number. So 1234 is not divisible by 4. Last example: 234436? Most know that 36 is divisible by 4, so 234436 is also. 36/2=18 and 18 is even, so 36, and therefore 234436, is divisible by 4. Since 100 is evenly divisible by 4, you can simply look at the last 2 digits. If that number is divisible by 4, then the entire number is as well.

Most people are fairly good at determining if a two-digit number is divisible by 4. But if you are not: divide the 2-digit number in half and then see if you are able to divide it evenly in half again (in other words, “is the result of dividing that 2-digit number in half an even number?”).

For example: Is 1234 divisible by 4? Most people can look and see that 34 is not divisible by 4, so 1234 is not divisible by 4. Otherwise, 34/2=17 and 17 is not an even number. So 1234 is not divisible by 4.

Last example: 234436? Most know that 36 is divisible by 4, so 234436 is also. 36/2=18 and 18 is even, so 36, and therefore 234436, is divisible by 4.

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