What is the Number Between?

S0-SA1-1391

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

The 'number between' concept helps us find which number comes after one number and before another. It's like finding the middle friend in a line of three, where you know who the first and last friends are.

Simple Example

Quick Example

Imagine you have scored 8 runs in a cricket match, and your friend scored 10 runs. What number of runs did another player score if they scored more than you but less than your friend? The number between 8 and 10 is 9.

Worked Example

Step-by-Step

Let's find the number between 15 and 17.

1. Start with the first number given: 15.
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2. Think about what number comes immediately after 15. You can count forward one step from 15.
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3. Counting one step from 15 gives us 16.
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4. Now, check if this number (16) comes before the second number given (17). Yes, 16 comes before 17.
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5. So, the number that is after 15 and before 17 is 16.

Answer: The number between 15 and 17 is 16.

Why It Matters

Understanding numbers between helps build a strong foundation for counting, sequencing, and understanding number lines. This skill is crucial for careers like data analysis, where you sort information, or in finance, for understanding number ranges in budgets.

Common Mistakes

MISTAKE: Confusing 'number between' with 'average'. For example, thinking the number between 2 and 4 is 3 (which is correct), but then thinking the number between 2 and 6 is 4 (which is also correct for this specific case, but not always the only number). | CORRECTION: 'Number between' usually refers to the immediate next number in a sequence. If there are multiple numbers, the question might specify 'all numbers between' or 'the first number between'. For this concept, we focus on the immediate successor.

MISTAKE: Counting backward instead of forward. For example, when asked for the number between 7 and 9, a student might think of 6. | CORRECTION: Always count forward from the first given number until you reach the number just before the second given number.

MISTAKE: Not understanding that there might be no whole number between two consecutive numbers. For example, asking for the number between 5 and 6. | CORRECTION: Explain that for whole numbers, there is no number between 5 and 6. This introduces the idea of fractions or decimals later.

Practice Questions

Try It Yourself

QUESTION: What is the number between 22 and 24? | ANSWER: 23

QUESTION: My bus number is 45. My friend's bus number is 47. What is the bus number that comes between ours? | ANSWER: 46

QUESTION: A shopkeeper sold 38 packets of biscuits on Monday and 40 packets on Wednesday. How many packets did he likely sell on Tuesday, assuming sales increased by one packet each day? | ANSWER: 39 packets

MCQ

Quick Quiz

Which number comes between 59 and 61?

The Correct Answer Is:

The number 60 comes right after 59 and right before 61. Options A, C, and D are either before 59 or after 61.

Real World Connection

In the Real World

When you use a music player on your phone, sometimes you want to listen to a song that is 'between' two other songs in a playlist. Or, when you are checking prices for a new mobile phone, you might look for a model priced between ₹15,000 and ₹20,000.

Key Vocabulary

Key Terms

BETWEEN: In the middle of two things | SEQUENCE: An order in which things follow each other | SUCCESSOR: The number that comes immediately after another number | PREDECESSOR: The number that comes immediately before another number

What's Next

What to Learn Next

Once you master finding the number between, you can move on to 'ordering numbers'. This will help you arrange a list of numbers from smallest to largest or largest to smallest, which is a key skill for many math problems.