What are these math puzzles caled?

I don't think these have a name, and I've never run across them before. However, so long as you don't mind changing the format around, they look easy to create on the computer or anywhere, really.

letter one: 3+4/2

letter two: 2x+3 = 51 (hint: that's the letter x, not a multiplication symbol)

letter three: 1*(5-4)

letter four: the next prime number after 11

letter five: add 3 to the answer to letter four

letter six: 4+4*2

letter seven: this letter is congruent with letter one

The answer is:

letter one: 3+4/2 = 5 (remember BEDMAS order of opperations: brackets, exponents, divide, multiply, add, subtract) = e (e is the fifth letter of the alphabet)

letter two: remember x? Let's solve for x:

2x+3 = 51

2x = 51-3 (we changed sides of the equation, so we need to change its sign)

2x = 48 (we knew all the numbers on the right side of the equals sign, so we can solve it!)

x = 48/2 (we moved the 2, so we need to change the sign, remember)

x = 24

Now, if we think about the alphabet, we know that x is the 24th letter. so...x = x! :-)

letter 3: 1*(5-4) = 1*1 = 1 = a(Did you remember about BEDMAS from above?)

letter 4: A prime number is a number who's only factors are 1 and itself, for example 7. We know that 2*6 = 12. So, 12 can't be prime. But 13 is! The 13th letter of the alphabet is, of course, m.

letter five: 13+3 = 16 = p. (You got letter four correct, right?)

letter six: 4+4*2 = 12 = l (BEDMAS is rather important, you know.)

letter seven: Congruent is a math term we use in geometry. It means two shapes that are exactly the same. So, i letter seven is exactly the same as letter one, it must also be...e!

If you did everything right, the word you get is: example

Wasn't that fun? Wish I had thought of this.

Do you mean a Cryptogram?

You can get a couple of them here:

http://www.geocities.com/cryptogramcorner/

Here you can create your own:

http://puzzlemaker.school.discovery.com/cryptogram...

jeez,i know only bout sudoku

IDK!!!!!!!! It sounds kinda confusin, maybe you should rearrange your writing so we can understand! lol