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What is Successor (Number After)?
Grade Level:
Class 3
Maths, Computing (increment)
Definition
What is it?
The successor of a number is the number that comes immediately after it. You can find the successor by adding 1 to the given number. Think of it as the 'next' number in counting.
Simple Example
Quick Example
Imagine your cricket team scored 150 runs. If they score one more run, their new score will be 151. So, 151 is the successor of 150. It's just the next number in the counting sequence.
Worked Example
Step-by-Step
Let's find the successor of 49.
Step 1: Understand what a successor is. It's the number that comes right after 49.
---Step 2: To find the successor, we add 1 to the given number.
---Step 3: So, we calculate 49 + 1.
---Step 4: 49 + 1 = 50.
---Step 5: The number that comes immediately after 49 is 50.
Answer: The successor of 49 is 50.
Why It Matters
Understanding successors is fundamental to counting and basic arithmetic, which are building blocks for all of maths and computing. It's used by software developers who write code to increment values, by data scientists who analyze sequences, and even in finance to calculate interest that grows over time.
Common Mistakes
MISTAKE: Subtracting 1 instead of adding 1. | CORRECTION: Remember, 'successor' means 'after', so you always add 1 to get the next number.
MISTAKE: Confusing successor with predecessor. | CORRECTION: Successor is the number AFTER (+1), while predecessor is the number BEFORE (-1).
MISTAKE: Adding 10 or some other number instead of 1. | CORRECTION: The successor is *immediately* after, meaning only one step ahead. Always add exactly 1.
Practice Questions
Try It Yourself
QUESTION: What is the successor of 78? | ANSWER: 79
QUESTION: A train departed from Platform 5. The next train will depart from the successor of 5. Which platform will it be? | ANSWER: Platform 6
QUESTION: If the current year is 2023, what will be the successor of this year? | ANSWER: 2024
MCQ
Quick Quiz
Which of these is the successor of 99?
98
100
99
101
The Correct Answer Is:
B
The successor of a number is found by adding 1 to it. So, 99 + 1 = 100. Options A and C are incorrect as they are not the number immediately after 99.
Real World Connection
In the Real World
When you use a music player and press 'next song', the player goes to the successor of the current song's track number. Similarly, in an online shopping app, when you increase the quantity of an item from 1 to 2, you are essentially selecting the successor quantity.
Key Vocabulary
Key Terms
SUCCESSOR: The number that comes immediately after another number | ADDITION: The process of combining numbers to find their total | NUMBER LINE: A visual representation of numbers in order | INCREMENT: To increase a value by a small amount, usually by one
What's Next
What to Learn Next
Great job understanding successors! Now that you know how to find the number after, you can move on to learning about 'Predecessor (Number Before)'. This will help you understand how numbers relate to each other in a sequence.
