What Is A Math Expression

For example 25 7 64 2 20 5 102.

What is a math expression.

When we combine numbers and variables in a valid way using operations such as addition subtraction multiplication division exponentiation and other operations and functions as yet unlearned the resulting combination of mathematical symbols is called a mathematical expression. An expression can be arithmetic algebraic polynomial and analytical. In mathematics an expression or mathematical expression is a finite combination of symbols that is well formed according to rules that depend on the context. The structure of defining math expression advances in different grades.

Though a long ungainly expression and a short elegant one may technically equal the same thing often a math problem isn t considered done until the answer has been reduced to simplest terms. 2 3 is an expression 3 x 2 is also an expression. In early grades children are expected to write math expressions using numbers and. In mathematics the expression is defined as a phrase that groups together numbers constant letters variables or their combination joined by operators to represent the value of something.

A math expression is different from a math equation. So 9 x is an algebraic expression in the next few examples we will be working solely with. Mathematical symbols can designate numbers variables operations functions brackets punctuation and grouping to help determine order of operations and other aspects of logical syntax. A mathematical expression can be as simple as 2 4 or as complex as 4xy 8x 5 x y.

Mathematical phrases can be written as verbal sentences you should be able to. The expression 9 8 represents a single number 17 this expression is a numerical expression also called an arithmetic expression the expression 9 x represents a value that can change if x is 2 then the expression 9 x has a value of 11 if x is 6 then the expression has a value of 15. Translate verbal sentences into algebraic expressions translate algebraic expressions into phrases. Math students are often asked to give their answer in the simplest terms in other words to write answers as small as possible.

Word product indicates that there should be multiplication of these numbers product is a result of. All mathematical expressions contain terms and each term has a coefficient the numerical factor.