Fun Multiplying

Maikeru D. Shinigami · 10-02-2012, 09:26 PM

We all know that math is fun, so watch this.

15 x 20 = 300, obviously.

15....20
15.....20
7......40
3......80
1......160

160 + 80 = 240.
240 + 40 = 280.
280 + 20 = 300.

What did I do?

With the 15, I just brought the number down and halved it until I reached one. However, instead of using halves, I rounded down. So, 7.5 = 7. For the 20, I just brought the number down and doubled equal to the number of times I halved the left side.

After that, I took the rows which held odd numbers on the left side, and added the corresponding number on the right side.

Bacon · 10-02-2012, 09:33 PM

No times 3

No dividing by 1

No thank you

10-02-2012, 09:26 PM	#1
Maikeru D. Shinigami The Grand Vizier Join Date: Apr 2009 Location: Funhouse Posts: 43,551 Rep Power: 45 Member's Picture Albums	Fun Multiplying We all know that math is fun, so watch this. 15 x 20 = 300, obviously. 15....20 15.....20 7......40 3......80 1......160 160 + 80 = 240. 240 + 40 = 280. 280 + 20 = 300. What did I do? With the 15, I just brought the number down and halved it until I reached one. However, instead of using halves, I rounded down. So, 7.5 = 7. For the 20, I just brought the number down and doubled equal to the number of times I halved the left side. After that, I took the rows which held odd numbers on the left side, and added the corresponding number on the right side. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. YouTube:

10-02-2012, 09:33 PM	#2
Bacon Special Jonin Candidate Join Date: Sep 2009 Location: Walkin' through the candy-lane with Tifa.~ -.- Posts: 30,027 Rep Power: 28 Member's Picture Albums	Re: Fun Multiplying No times 3 No dividing by 1 No thank you __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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