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An "expression" is anything that can be calculated to get a number, in other words, anything that represents a number, so that includes the numbers themselves.

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Q: Why is a single number an expression?
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Related questions

What is an expression that contains a variable a number and at least one operation?

That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.


Can an expression stand for something other than a single number?

32+d


Are all algebraic expression a polynomial expression?

Not really.For example: x can be considered and algebraic expression by itself, however it is only a single variable, so by definition it is not a polynomial expression (multiple-number expression).


What is the meaning of variable in algebraic expression?

Variable is any letter used in an algebraic expression, and can vary (change form) to be any number, and one variable means the same number in any single algebraic expression. Usually algebra is simplifying the expression or equation until you know what the variable is equal to.


A number or expression that can be multiplied to get another number or expression is called?

A number or expression that can be multiplied to get another number or expression is called a factor.


What is the unit rate of 0.8x?

A single number of expression cannot have a unit rate. You need at least two measures.


What is the difference between a variable and a algebraic expression?

A variable is a single letter that represents a number. For example x is a variable.An algebraic expression can contain variables, numbers, mathematical symbols, etcetera. An example of an algebraic expression is 3x+12.


An expression of three terms?

"An expression of three terms" means that the expression has three parts, combined by plus or minus signs. Within each of these parts (terms), there can be a single number or variable, or a product or division involving several other pieces.


What is an expression that is a number and a variable or a product of a number and one or more variables?

In Algebra a term is either a single number or variable, or numbers and variables multiplied together.


What is the number or expression in a power that is multiplied by itself?

What is the number or expression in a power that is multiplied by itself


When a number or expression that is multiplied by another number or expression to get a product?

Idont know factor


Is a rational number is a rational expression?

Any number that can be expressed as a fraction is a rational number otherwise it is an irrational number.