What is The Number 900?

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Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

The number 900 is a whole number that comes after 899 and before 901. It is a three-digit number, meaning it has three places: hundreds, tens, and ones. It represents nine hundreds.

Simple Example

Quick Example

Imagine you are counting your savings. If you have nine notes of 100 rupees each, you have 900 rupees in total. That's a lot of money!

Worked Example

Step-by-Step

Let's understand 900 by breaking it down:
1. Start with the number 1.
2. Count up to 100 (one hundred).
3. Keep counting 100 more, you reach 200.
4. Do this nine times in total: 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100.
5. When you add 100 nine times, you get 900.
6. So, 900 is simply nine groups of one hundred.

Why It Matters

Understanding numbers like 900 is fundamental for daily life and many subjects. It's crucial for managing money, understanding large data sets in science, and even coding. Accountants and engineers use large numbers constantly in their work.

Common Mistakes

MISTAKE: Writing '900' as '90' or '9' when counting hundreds. | CORRECTION: Remember that '900' has three digits. The '9' is in the hundreds place, followed by two zeros for the tens and ones places.

MISTAKE: Confusing 900 with 90 or 9000. | CORRECTION: Pay attention to the number of zeros. 90 has one zero, 900 has two zeros, and 9000 has three zeros. Each extra zero means multiplying by 10.

MISTAKE: Saying 'nine zero zero' instead of 'nine hundred'. | CORRECTION: While 'nine zero zero' is understood, the correct way to read 900 is 'nine hundred'. This helps in understanding its value as nine groups of one hundred.

Practice Questions

Try It Yourself

QUESTION: If you have 9 packets of biscuits, and each packet has 100 biscuits, how many biscuits do you have in total? | ANSWER: 900 biscuits

QUESTION: A cricket stadium has a capacity of 1000 people. If 900 people are already inside, how many more people can enter? | ANSWER: 100 people

QUESTION: Your school library has 850 books. If they buy 50 new books, how many books will the library have? Is this number more or less than 900? | ANSWER: 900 books. This number is equal to 900.

MCQ

Quick Quiz

Which of these represents the number 900?

Nine tens

Nine ones

Nine hundreds

Nine thousands

The Correct Answer Is:

The number 900 means nine groups of one hundred. Option A (Nine tens) is 90, Option B (Nine ones) is 9, and Option D (Nine thousands) is 9000.

Real World Connection

In the Real World

In India, you might see 900 used when talking about distances, like 'The train journey is about 900 kilometers.' Or, a mobile phone plan might offer '900 MB of data per day.' Even the price of a new pair of shoes could be around 900 rupees.

Key Vocabulary

Key Terms

WHOLE NUMBER: A number without fractions or decimals. | DIGIT: A single symbol used to write numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9). | PLACE VALUE: The value of a digit based on its position in the number (e.g., in 900, the 9 is in the hundreds place).

What's Next

What to Learn Next

Now that you understand 900, you can explore other three-digit numbers and how they are used. Next, you could learn about 'What is The Number 1000?' to understand the jump to four-digit numbers!