What is The Number 140?

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Grade Level:

Pre-School – Class 2

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Definition

What is it?

The number 140 is a natural number that comes after 139 and before 141. It is an even number, meaning it can be divided exactly by 2. We use 140 to count things, measure quantities, and represent values.

Simple Example

Quick Example

Imagine you are counting your collection of cricket trading cards. If you have 139 cards and your friend gives you one more, you will now have 140 cards. It's just a way to count how many things there are.

Worked Example

Step-by-Step

Let's find out how many 20-rupee notes make up 140 rupees.

1. We need to divide the total amount (140 rupees) by the value of each note (20 rupees).
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2. So, we write it as 140 ÷ 20.
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3. We can simplify this by cancelling the zeros: 14 ÷ 2.
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4. Now, we know that 2 multiplied by 7 gives 14.
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5. Therefore, 14 ÷ 2 = 7.
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Answer: You need 7 twenty-rupee notes to make 140 rupees.

Why It Matters

Understanding numbers like 140 is fundamental for everything we do with maths, from basic counting to complex calculations. It's crucial for careers in finance (like a bank manager), engineering (designing buildings), or even in sports analytics (tracking player scores).

Common Mistakes

MISTAKE: Confusing 140 with 104 or 410. | CORRECTION: Always read numbers from left to right, understanding the place value of each digit (hundreds, tens, ones). 140 means one hundred, four tens, and zero ones.

MISTAKE: Thinking 140 is an odd number. | CORRECTION: An even number always ends in 0, 2, 4, 6, or 8. Since 140 ends in 0, it is an even number.

MISTAKE: Assuming 140 is a prime number. | CORRECTION: A prime number only has two factors: 1 and itself. 140 has many factors (like 2, 5, 7, 10, 14, 20, etc.), so it is a composite number.

Practice Questions

Try It Yourself

QUESTION: If a train travels at 70 km/hour, how long will it take to cover 140 km? | ANSWER: 2 hours

QUESTION: A box contains 140 laddoos. If you pack them into smaller boxes, with 10 laddoos in each, how many small boxes will you need? | ANSWER: 14 boxes

QUESTION: Your mobile data plan gives you 2 GB of data daily. If you used 1 GB yesterday and 400 MB today, how much data (in MB) do you have left for today? (Hint: 1 GB = 1000 MB) | ANSWER: 600 MB (1000 MB - 400 MB = 600 MB)

MCQ

Quick Quiz

Which of the following statements about the number 140 is TRUE?

It is an odd number.

It is a prime number.

It is divisible by 7.

It comes before 139.

The Correct Answer Is:

140 is an even number, not odd. It is a composite number, not prime. 140 ÷ 7 = 20, so it is divisible by 7. It comes after 139, not before.

Real World Connection

In the Real World

When you check the score of an IPL cricket match, you might see a team has scored 140 runs. Or, if you're buying vegetables, the vendor might tell you the total bill is 140 rupees. Even the speed limit on some highways in India might be 140 km/h, showing how numbers are part of our daily lives.

Key Vocabulary

Key Terms

NATURAL NUMBER: A counting number starting from 1 (1, 2, 3...). | EVEN NUMBER: A number that can be divided exactly by 2. | PLACE VALUE: The value of a digit based on its position in a number. | COMPOSITE NUMBER: A number with more than two factors.

What's Next

What to Learn Next

Now that you understand what 140 is, you can explore other numbers and their properties, like prime numbers or square numbers. This will help you build a strong foundation for more advanced math concepts like fractions and decimals.