NO Calculator! or How to Multiply Quickly

An interesting demonstration of multiplication by use of an alternate method. Technique essentially creates logarithms to work. I am sorry but I would like to credit the author, but I do not know who it is.

Category:

Howto & Style

Tags:

• math
• multiply
• calculator
• mathematics
• arithmetic
• lifehack

[jackie6197]

how would say 60* 89 be done. my answers are always wrong

[itoronto1]

@jackie6197 need to still keep a place for the blank or zero

[Tenshionnanoko128]

3367855377 x 126546847??? :D

[itoronto1]

@Tenshionnanoko128 possible but unrealistic

[Retroshooter123]

can anyone tell me how itoronto1 solved it by drawing a half circle to count?

[itoronto1]

@Retroshooter123 read the notes I did not do this I solely posted it

[xFallenAnjelx]

@Retroshooter123 They didn't, that was just a visual to show you add those intersections.

[animecrazy102]

...What? That's so weird!! I really am excited to try this out...lol :P

[goalsavior]

@Retroshooter123 you add the diagonal

[itoronto1]

@shimesaoshi yes it can - it leaves a blank

[itoronto1]

@iTyGuy32 just follow the technique - it is explained

[itoronto1]

@My6T1 don't recommend it although it should work if you can keep track of decimal location

[itoronto1]

@mohamedhakkmed follow the instructions on sums greater than ten