That depends what it is to be added to.
One is added.
Another number added to a number is the sum (total) of the two numbers.
A number being added to another number is called an addend. The total of the numbers added together is called the sum.
When added to a rational number, any irrational number will produce an irrational number.also, when added to an irrational number, any rational number will produce an irrational number.
An addend is a number or quantity to be added to another.
Any number may be added
Any irrational number, when added to 13, will produce an irrational number.
5+x is 5 added to another number.
Another number added to a number is the sum (total) of the two numbers.
A natural number is doubled when added to its reciprocal. Find that number!
45 will be the average...
Two negative numbers added together result in a negative number.