addition
Sign in to saveright|thumb|upright=0.5|alt=Diagram: One column containing three apples, and another column containing two apples; put together, there are 5 apples in total.|3 + 2 = 5 with apples, a popular choice in textbooks
AI overview
Addition is the mathematical operation of combining two or more numbers or quantities to find their total. It matters because it's one of the most fundamental tools we use in everyday life, from counting objects to managing money and solving practical problems.
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Article
38 sectionsContents
- Notation and terminology
- Definition and interpretations
- Combining sets
- Extending a length
- Properties
- Commutativity
- Associativity
- Identity element
- Successor
- Units
- Performing addition
- Innate ability
- Addition by counting
- Single-digit addition <span class="anchor" id="Table"></span>
- Carry
- Decimal fractions
- Scientific notation
- Non-decimal
- Computers
- Addition of numbers
- Natural numbers
- Integers
- Rational numbers (fractions)
- Real numbers
- Complex numbers
- Generalizations
- Abelian group
- Linear algebra
- Set theory and category theory
- Related operations
- Arithmetic
- Ordering
- In probability theory
- See also
- Notes
- Footnotes
- References
- Further reading
right|thumb|upright=0.5|alt=Diagram: One column containing three apples, and another column containing two apples; put together, there are 5 apples in total.|3 + 2 = 5 with apples, a popular choice in textbooks
Addition, usually denoted with the plus sign , is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division. The addition of two whole numbers results in the total or sum of those values combined. For example, the adjacent image shows two columns of apples, one with three apples and the other with two apples, totaling to five apples. This observation is expressed as , which is read as "three plus two equals five".