"Number Scrabble" (or "Math Scrabble") is a game based on normal Scrabble, but you make equations instead of words. The letter tiles used in Scrabble are replaced with numbers and operators. You can use a standard scrabble set to play number scrabble by writing the proper numbers and operators on the back of the standard scrabble tiles.  Like regular Scrabble the game is great for ages 8+.

------ an aside for the experienced game player ------
Sick and Tired of ordinary Scrabble?  I'll bet you are.  We all know why, too.  It's "that friend".  You know the one.  It's game night and sooner or later you are reminiscing about games you played as a child with your grandmother, and someone foolishly pulls out the Scrabble.  For a move or two it's warm and fuzzy like you remember.  Then "that friend" plays "toea" connected with "aa".  You're like: "umm, what is that?"  You want me to kick your butt-a with my foot-a?  and "aa"?  oh right its some onomatopoetic rock from hawaii - isn't that a hawaiian word though?  your "friend's" next move? "tsktsks".  excuse me that is not a word!  next?  "suq".  yes, yes it does.  for all of us.  At this point, everyone is fully jolted out of their sentimental stupors and remembering why Scrabble is so pointless and they are never ever ever going to play it again.  Even in nerd circles, if the best thing you can do with your time is to memorize some utterly arbitrary list of 170,000 meaningless letter sequences so you can ruin a perfectly fun game for all your friends - well, that makes you a major toadstool not an erudite intellectual.  Who came up with that arbitrary list anyway?  Wikipedia tells me it was the "National Scrabble Association Dictionary Committee".  Well, sounds to me like a bunch of pencil pushers came up with a hazing ritual of epic proportions.

Anyhoo, this sort of scarring experience got me thinking.  Perhaps we can do away with the silly nonsense of fabricated letter sequences that must be memorized?  You may also have smart friends that really don't speak english so well, at that point the arbitrariness of the default Scrabble letter sequences seems even more glaring.  Considered this way, it seems painfully clear that we should replace all that gobbledygook with a universal language that has a simple, well known character sequencing structure.  MATH - duh!  With math as our language, everyone knows the rules, and everyone knows what sequences are valid.  You could sit down for game night with aliens from another planet, and everyone would be with the program*.  Now that is a nerdy game worth playing.

* well, this game uses decimal numbers, which of course any alien would understand but you'd look a bit provincial if you were not able to do anything else.  try a few games and then consider leveling up with Binary Number Scrabble.

Step 1: Make your tiles

To play "Number Scrabble", you need a game board and tiles.  Coincidentally, it is very easy to retrofit your existing Scrabble kit.  You just need to relabel all the tiles.

If you've seen the light, just grab a sharpie and you can write on the backs of all the tiles directly.  If you want to give it a test first, you can put masking tape on the tiles and write on that.

If you are going to play with young children, you can change the Square and Square root tiles to Plus and Minus.

Number/Operator How Many Score value
1 5 1
2 5 1
3 5 2
4 5 2
5 5 3
6 5 2
7 5 4
8 5 2
9 5 2
0 5 1
+ (add) 7 1
- (subtract) 7 1
× (multiply) 5 2
÷ (divide) 5 3
² (square) 2 3
(square root) 2 3
= (equals) 20 1
blank 4 0

<p>Math scrabble? Cool..</p>
<p>Definitely would be great to add parenthesis and variables. Don&rsquo;t know how that would work, but it be great to take the game from arithmetic to more advanced mathematics.</p>
How about adding parentheses for longer expressions? <br>
Wow: the perfect game for me! And for the ultra-nerdy; use binary or hexadecimal?
My head was spinning checking out your game calculations...i need this game for my 9yr old who doesn't want to use her head for maths and so this might help ...i'm praying...thanks
I remember wishing that there was a scrabble for math geeks, but now I can stop wishing and start making!
Cool!<br /> Is there any where to buy blank tiles?
Sometimes antique malls have big bowls of Scrabble tiles available on the cheap.
Thanks for this.&nbsp; I just finished making this game as a gift for my Mom's birthday.&nbsp; Her and my brother are word/number game freaks.&nbsp; They are going to love it.<br /> <br /> I bought a new game and marked the back of the tiles.&nbsp; I used a regular sharpy for the main numbers and operators.&nbsp; Then I used a fine tip sharpy to mark the value numbers in the lower right.<br /> <br /> I finished it off with a couple layers of clear coat just so the numbers don't wear out.<br /> <br /> Many Thanks,<br /> Kaspr<br />
I LOVE&nbsp;THIS!&nbsp;I'm a really bad speller, so I have always hated playing scrabble, but I&nbsp;love math. This is great. Thank you!<br />
What next - Boolean with TRUE / FALSE tiles..? <br /> <br /> L<br /> <br />

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Bio: Dan Goldwater is a co-founder of Instructables. Currently he operates MonkeyLectric where he develops revolutionary bike lighting products. He also writes a DIY column for ... More »
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