They are called consecutive numbers. They all go up in order 9 10 11 12 13 and 14 are consecutive too. They are also the first part of the set of natural numbers or countingnumbers.
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In any addition problem, such as 1 + 2 = 3, the numbers 1 and 2 are called addends. The total is called the sum.
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They are the natural numbers of 1 2 3 4 5 .... etc
3 minuend - 2 subtrahend 1 difference
The prime numbers from 1 to 3 are 2 and 3.