# Methods of teaching children to cardinal and ordinal account

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Follow the link for more information. 3 add 2 is equal to 5″. Besides counting items, addition can also be defined on other types of numbers, such as integers, real numbers and complex numbers. This is part of arithmetic, a branch of mathematics. Performing addition is one of the simplest numerical tasks.

In primary education, students are taught to add numbers in the decimal system, starting with single digits and progressively tackling more difficult problems. The result is expressed with an equals sign. A whole number followed immediately by a fraction indicates the sum of the two, called a mixed number. This notation can cause confusion since in most other contexts juxtaposition denotes multiplication instead. The sum of a series of related numbers can be expressed through capital sigma notation, which compactly denotes iteration. All of the above terminology derives from Latin. Using the gerundive suffix -nd results in “addend”, “thing to be added”.