Las Matemáticas — Mathematics
Resta^{NF}  Subtraction
Suma^{NF}  Addition
División^{NF}  Division
Multiplicación^{NF}  Multiplication
Campos^{NMP}  Fields
Tipos^{NMP} de número^{NM}  Types of number
General

La variable es femenino y pi también es correcto.
I'd like to know, in English:  Menos (and igual a) (from?): 4  3 = Cuatro menos tres es igual a  Más (and?): 2 + 3 = Dos más tres igual a  Dividido por (o entre) (divided?): 5 : 2 = Cinco entre dos (o dividido por dos) es igual a  Multiplicado por: 3 · 2 = Tres por dos igual a 
Se puede decir, Math
O en Inglaterra "Maths" (Pienso) 
@David: "la variable" is correct. And "el (número) pi". :)
In Mexico we use "las matemáticas" in plural. :) Some additions: Campos (los)  Fields Trigonometría (la)  trigonometry Seno (el)  sine Coseno (el)  cosine Tangente (la)  tangent División (la)  ratio Hipotenusa (la)  hypotenuse Cateto adyacente (el)  adjacent leg Cateto opuesto (el)  opposite leg Ángulo recto (el)  90 degree angle Triángulo rectángulo (el)  right triangle Triángulo equilátero (el)  equilateral triangle Triángulo isósceles (el)  isosceles triangle Triángulo escaleno (el)  scalene triangle Teorema (el)  theorem Polígono (el)  Polygon pendiente (la)  Slope 
All suggestions have been added. Thanks! :)

Integral: integral
Derivada: derivative Límite: (limit?) Límite tiende a infinito: (limit tends to infinite?) Logaritmo: logarithm Logaritmo neperiano: ? logarithm Coordinate is coordenada. 
Números pares e impares = even and odd
Números primos = prime numbers 
It would be nice to remember counting units, tens and hundrends (unidades, decimas y centesimas) especially because The British and The americans do it differently.

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Division:
El resto**: remainder El resto de 10 entre 3 es 1: the remainder of 10 divided by 3 is 1; 10 divided by 3 leaves 1 ** ¡Muy distinto de "la resta"! Campos: La geometría: geometry La combinatoria: combinatorics La probabilidad: probability La estadística: statistics Classification of mathematical statements (group with el teorema): El axioma: axiom La conjetura: conjecture La hipótesis: hypothesis Important general terms: El conjunto: set El grupo: group El cuerpo: field El binomio: binomial El polinomio: polynomial La relación binaria: binary relation La función: function inyectiva: injective sobreyectiva: surjective Types of number: imaginario: imaginary complejo: complex 
As I start my school year (it's almost Fall in the northern hemisphere), I'll start making a list as I encounter them of Algebra terms that I think would be important (and for which I'd like to know the Spanish equivalents). I will have an entire class this year of ESOL students ("English as a Second Language"), the grand majority of whom are Spanish speakers with very little (if any) background in English. This class will be team taught with an ESOL expert (who is a VERY dynamic teacher!). Neither of us is very fluent in Spanish....
Here's a list from our first week of discussions about content: Inverse Opposite (i.e. Additive Inverse) Reciprocal (i.e. Multiplicative Inverse) Commutative Property Associative Property Distributive Property Identity (in other words, Additive Identity or Multiplicative Identity) Operations (which includes addition, subtraction, multiplication, division, etc.) Grouping Symbols Parentheses Expression Terms (in an expression) Like Terms 
My ESOL/Algebra class this year is going well. 25 out of the 28 students are native Spanish speakers and usually enjoy the fact that I am trying to learn to speak Spanish. Although on Friday I heard something like "No me gusta que la profesora puede entender el español" or something similar. :)
Anyway  I have been trying to do oneonone explanations with the Spanish speakers using as much Spanish as I can (when I know I am correct). We use the word "equis" a lot. :) But I have found that I don't know how to say "x squared" in Spanish. I know that "square" is "cuadro". Is "x squared" said as "x cuadrado"? So if I were reading an expression, I would say something like this: (x^2 + 3x) would be "equis cuadrado más tres equis". ??? "Cuadrado"??? 
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Two plus three equals ... Five divided by two equals... Three times two equals... :) 
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Equis al cuadrado más tres equis. :) 
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Es como las raíces: raíz cuadrada, raíz cúbica y después raíz cuarta, etc. Yo no diría raíz segunda ni tercera :thinking: 
In English, we can say "x squared" OR "x to the second power" and "x cubed" OR "x to the third power". Both are equally acceptable, and I teach both.
With the roots, I would only ever say "square root", but could easily exchange "third root" for "cube root". English is a strange language.......... :) 
En México se dice "equis cuadrada".
x cubed is an "equis al cubo"... sometimes (not too often) "equis cúbica" Raise to a power is "elevar a la [cuarta, quinta, etc.] potencia" As for the roots, it's the same as Irma has said. By the way, Lou Ann, all the letters (and variables) in Spanish are always referred to in feminine. ;) 
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Hace mucho tiempo que no estudio matemáticas Ha pasado mucho tiempo desde que estudiaba matemáticas. But thanks again :) 
I have not studied maths for a long time
It has been a long time since I studied maths A long time has passed since ... no se puede utilizar since con negativa :thinking: 
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Help!! pjt33???? 
I haven't studied maths since secondary school. :good:
I haven't studied maths since I was at secondary school. :good: Since he failed to get that job he's been moping about the house. :good: Since he didn't get that job he's been moping about the house. :good::thinking: Feels fairly informal to me. I'd avoid this construction myself because "since" has the alternative meaning of "because" and here I have a sense that I'm trying to understand it in that sense, failing, and falling back on the sense of "in the period of time from then to now". Entonces no sé cuál es la regla que Perikles invoca, pero tampoco sé por qué lo ha mencionado, puesto que (¡since!) la frase de Irma no contenía la palabra "since". Hace mucho tiempo que + verbo perfecto = Verbo perfecto + for a long time. E.g. Hace mucho tiempo que soy profesor = I've been a teacher for a long time. Hace mucho tiempo que no estudio las mates = I haven't studied maths for a long time. 
In the U.S., we always use math instead of maths.
It's been a long time since I studied math. I hate math. Who is your math teacher? When do you have math? 
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Saying "Ever since he didn't get that job..." avoids confusion
re: since/because. hermit 
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Hermit, good point. 
How about doing binary (base2) arithmetic in Spanish, using just the digits 0 and 1?
Also in logic we can use the symbols 0 and 1 to represent two mutually opposite states such as on and off, or true and false? In this system the symbols . and + are used to mean AND and OR 
integral de superficie = surface integral
integral de línea = line integral integral múltiple = multiple integral integración = integration coordenadas polares = polar coordinates coordenadas esféricas = spherical coordinates coordenadas cilíndricas = cylindrical coordinates diferenciable = differentiable diferenciabilidad = differentiability diferenciación = differentiation continuidad = continuity continuo = continuous función derivable = differentiable function (in 1 dimension) función diferenciable = differentiable function (in multiple dimensions) función continua = continuous function derivada parcial = partial derivative conjunto = set subconjunto = subset intervalo = interval dimensión = dimension dominio = domain rango = range polinomio = polynomial 
Why didn't this thread show when I looked under Forums/Vocabulary/Vocabulary by topic? I had to do a search on forum titles.... ???
Anyway  it occurred to me this morning (while teaching about fractions to a group of Spanish speaking students) that I don't know how fractions are worded in Spanish. onehalf twohalves onethird twothirds onefourth twofourths threefourths onefifth twofifths threefifths onesixth oneseventh oneeighth oneninth onetenth etc.... Thanks! 
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Thanks, Hernan! Now, when you say "etc.", I'm not sure how to generically determine the "nth" denominator. In English, we add "th" if it's a unique number name (seventeenth, twentieth, etc.), and if it ends with "one" through "nine", the ending is the same as that number (twentythird, fiftyninth, etc.) How would I determine, say, how to say "eight elevenths" or "fifteen twentythirds", etc.?

onceavos = elevenths
doceavos = twelfths treceavos = thirteenths... veinteavos = twentieths dos quinceavos = two fifteenths trece dieciochavos = thirteen eighteenths I think that's how it goes, in answer to your question Lou Ann. :) 
VERY helpful! Thanks!! :)

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However, I wanted to go to the "undécimo" form, and I could not remember what is it that they are called... Ok, Lou Ann, you are a Math teacher... Numbers: Cardinals, ordinals is there any other? 
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I think that most people would just say that there are cardinal and ordinal numbers. I've read somewhere about "nominal" numbers (numbers that name something like a number on a sports jersey or something like that), but I don't know how conventional that is. In a mathematics class, we talk about real numbers, rational and irrational numbers, integers, whole numbers and natural or counting numbers. Those are probably not practical or "everyday" numbers that anyone but a math teacher would use..... :p 
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And I don't think many people talk about "quaternion numbers" (just "quaternions"), but computer games programmers use them a lot. 
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But ... I have never heard of "quaternions". What exactly are they?? 
Ok I got it.
Go to http://spanish.about.com/od/spanishv.../a/ordinal.htm for a complete list of ordinals. and this one: http://www.learnspanishonline.de/g..._fractions.htm for a list of fractional numbers. :) 
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By the way  you didn't answer my question about the "quaternions". What are they? :) 
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* This is a correction from earlier. 
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Basic Algebra really only gets into very simple equation solving and line graphing. There are some other brief introductory topics like statistical graphing and a VERY brief intro to parabolas and quadratic equations, etc. Everything is VERY basic! Complex numbers would be out of the question!

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