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mathsWhole NumbersComparing Whole Numbers

### Predecessor and Successor (Whole Numbers)

It was earlier studied that the numbers are in an ordered sequence. In this page, the predecessor and successor of a number is explained.

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Whole numbers are ordered in a specific sequence. This is represented by the number line.Predecessor is the number prior to a number in the order.

Successor is the number that follows a number in the order.

The predecessor of 3 is 2.
The successor of 3 is 4.

What does the word 'predecessor' mean?

• something that has desired state
• something that is comes before or prior in the order
• something that is comes before or prior in the order

The answer is 'something that comes before or prior in the order'. "pre" means "beforehand" and "decessor" is derived from a word meaning "that departed".

The numbers are ordered 1,2,3,4, cdots.

Predecessor of a given number is the number that comes before or prior to the given number. The predecessor of 3 is 2.
The predecessor of 4 is 3.

What does the word 'successor' mean?

• one who is successful
• something that comes after or follows in the order
• something that comes after or follows in the order

The answer is 'something that comes after or follows in the order'.

The numbers are ordered 1,2,3,4, cdots.

Successor to a given number is the number that follows the given number. The successor of 3 is 4.
The successor of 4 is 5.

Predecessor: The number that comes before a given number is the predecessor of the given number. The predecessor is one less than the given number.

Successor: The number that comes after a given number is the successor of the given number. The successor is one greater than the given number.

Solved Exercise Problem:

What is the successor of 9?

• number-line ends at 9
• 10
• 10

The answer is '10'. The number-line continues after 9 with 10, 11, 12, cdots.

Solved Exercise Problem:

What is the predecessor of 13?

• 12
• 12
• 9

The answer is '12'.

Solved Exercise Problem:

What is the predecessor of 233?

• 233
• 232
• 232
• 234

The answer is '232'.

Solved Exercise Problem:

What is the successor of 233?

• 233
• 232
• 234
• 234

The answer is '234'

What is the term to refer to the number that comes before (in the number order) to a given number?

• Pronunciation : Say the answer once

What is the term to refer to the number that comes after or follows (in the number order) to a given number?

• Pronunciation : Say the answer once

Solved Exercise Problem:

What is the predecessor of 1?

• 0
• 0
• 1
• Predecessor does not exist for 1

The answer is '0'.

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