In this AoPS thread you can find multiple extremely fast ways to calculate \(9+27\). http://www.artofproblemsolving.com/Forum/viewtopic.php?f=224&t=572612

I've used this thread multiple times to prepare for AIME, so I would recommend you guys check it out.

You can post your favorite way to calculate \(9+27\) in the comments below if you want.

Have fun! ^_^

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

Sort by:

TopNewest\(9*4 = 36\) ....Definitely my favorite :D

Log in to reply

36 ..........

27 + 10 -1

37-1

36

Log in to reply

Yes, me too!

Log in to reply

7*2=14+2+20 really fast in my mind

Log in to reply

First i add 3 to 27 that makes 30 then i add remaining 6 to it

Log in to reply

3^2+3^3=36

Log in to reply

9 * 3^3 =36

Log in to reply