what does expression mean in math
An expression in math is a mathematical phrase which may include numbers, operations (+,-,x,/) and in the case of algebraic expressions, letters. It doesn't have to be a full equation with the =. Some examples would be 8+4, 4y, 9 x 12, x – 4.
In mathematics, expression refers to a sum or difference of terms that uses numbers or variables, or both. You can see examples of expressions here: http://www.mathleague.com/help/algebra/algebra.htm.
In math, an expression is another way of saying a mathematical sentence. The expression is something even as simple as 2 + 2.
An expression in math is a combination of symbols that are formed according to the proper context. Expressions are common in algebra.