Addition

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In mathematical arithmetic operation addition is the fundamental operation. Addition is used to combining more than one value together into a larger collection. Addition follows several important properties that is commutative, associative, etc.

In the integer arithmetic operation the addition involves only in the integer values and 0. For addition operation 0 is called identity because any number that is added with 0 this will gives the same result.
Performing addition is one of the simplest numerical tasks. Addition of very small numbers is accessible to toddlers; the most basic task, 1 + 1, can be performed by infants as young as five months and even some animals. In primary education, children learn to add numbers in the decimal system, starting with single digits and progressively tackling more difficult problems. Mechanical aids range from the ancient abacus to the modern computer, where research on the most efficient implementations of addition continues to this day.