- Joined
- Jun 30, 2005
- Messages
- 2,736
- Age
- 40
- Location
- Windurst Water
- Website
- www.breakofdawn.freeforums.org
- Nation Banner
- Main Job
- Secondary Job
- Third Job
- Server
- Quetzalcoatl
- Linkshell
- LunarSky
- FFXIV
- Vandoura
A new way to Do the Math without Calculator like 21 x 13 =, and 123 x 321 =
- Thread starter Vandoura
- Start date
-
- Tags
- 123 321 calculator math
Some people have too much time on their hands.
- Joined
- Sep 5, 2006
- Messages
- 741
21 x 13 =
21 X 10 + 21 X 3
210 + 63 = 273
did that in my head in 2-3 seconds almost this way seems weird and slow
123 x 321
100 X 321 + 20 X 321 + 3 X 321
32100+ (3210 X 2)+ 963
+
32100
6420
963
------
39483
Call me old vasioned but doing it in your head is easier only thing that is faster is useing a calcutor to work out Pie plus with doing it in your head you can show your working out
21 X 10 + 21 X 3
210 + 63 = 273
did that in my head in 2-3 seconds almost this way seems weird and slow
123 x 321
100 X 321 + 20 X 321 + 3 X 321
32100+ (3210 X 2)+ 963
+
32100
6420
963
------
39483
Call me old vasioned but doing it in your head is easier only thing that is faster is useing a calcutor to work out Pie plus with doing it in your head you can show your working out
Last edited:
- Joined
- Jun 30, 2005
- Messages
- 2,736
- Age
- 40
- Location
- Windurst Water
- Website
- www.breakofdawn.freeforums.org
- Nation Banner
- Main Job
- Secondary Job
- Third Job
- Server
- Quetzalcoatl
- Linkshell
- LunarSky
- FFXIV
- Vandoura
delsus said:
ok do this on your head
I will look at the time this posted and the the time you replied to me lol
910401441234 x 23101 =
Go
No Calculator allowed! D:
- Joined
- Sep 5, 2006
- Messages
- 741
Vandoura said:
910401441234 X 20000
18208028824680000
910401441234 X 3000=
2731204323702000
910401441234 X 100=
91040144123400
910401441234 x 1 =
910401441234
+
18208028824680000
2731204323702000
91040144123400
910401441234
---------------------
21031183693946634
yeah got 2 questions wrong in my maths test at college and 1/2 though a A lv in accountcy all rdy so
- Joined
- Sep 5, 2006
- Messages
- 741
ok explain how you work out pie by using a 1 cm X 1 cm square grid with only a pencil, ruler and a compass..... bet u cant yet its possable to get almost to 100dp on it. Yes i know im a math geek i have a disability in langues but because of it i do not think like other people (think out side of the box bascily) alot of smart people had it like einstein he has disylxia to. Resson why i dont care now when people mark me wrong on my english, as its not strong for me and it be very very hard for me to get better. But most people will never be able to work things out in there head as good as i can.Rannoch said:
- Joined
- Jul 8, 2006
- Messages
- 2,614
- Age
- 39
- Location
- Düsseldorf, Germany
- Website
- www.myspace.com
- FFXIV
- Sharpe
delsus said:
Unless it's spelling or grammar.
LOLZ!
I lol'd.
Multiplying is pretty easy to do in your head.
Multiplying is pretty easy to do in your head.
- Joined
- Jun 30, 2005
- Messages
- 2,736
- Age
- 40
- Location
- Windurst Water
- Website
- www.breakofdawn.freeforums.org
- Nation Banner
- Main Job
- Secondary Job
- Third Job
- Server
- Quetzalcoatl
- Linkshell
- LunarSky
- FFXIV
- Vandoura
.delsus said:910401441234 X 20000
18208028824680000
910401441234 X 3000=
2731204323702000
910401441234 X 100=
91040144123400
910401441234 x 1 =
910401441234
+
18208028824680000
2731204323702000
91040144123400
910401441234
---------------------
21031183693946634
yeah got 2 questions wrong in my maths test at college and 1/2 though a A lv in accountcy all rdy so
ok correct, try this now
(912413241 divided by 4) x (7511^4) minus (620440616015461) =
No calculator go!
EDIT: "^" = Carrot thingy >.> like ^2 = Square Root
Rannoch said:
Obviously something outside the box, duh.
He doesn't think like normal people, god.
/napoleon dynamite.