Definition Of Successor And Predecessor In Math

In math, the terms successor and predecessor refer to the numbers directly after or directly before a given number, respectively. To find the successor of a given whole number, add one to the given number. To find the predecessor of a given whole number, subtract one from the given number.

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Examples

Suppose that the given number is 18. Its successor is 19, and its predecessor is 17. If the given number were 226, it would have a successor of 227 and a predecessor of 225. Additionally, if x is the successor of y, then y is the predecessor of x. For instance, 80 is the successor of 79, so therefore 79 is the predecessor of 80.

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Whole Numbers

The terms successor and predecessor apply only to whole numbers—that is, zero, one, two, three and so on; they do not apply to fractions, decimals or negative numbers. Every whole number has a successor. With the exception of zero, every whole number also has a predecessor.

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Cite This Article

MLA

Harris, Amy. "Definition Of Successor And Predecessor In Math" sciencing.com, https://www.sciencing.com/definition-successor-processor-maths-6680577/. 13 March 2018.

APA

Harris, Amy. (2018, March 13). Definition Of Successor And Predecessor In Math. sciencing.com. Retrieved from https://www.sciencing.com/definition-successor-processor-maths-6680577/

Chicago

Harris, Amy. Definition Of Successor And Predecessor In Math last modified August 30, 2022. https://www.sciencing.com/definition-successor-processor-maths-6680577/

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