What is One Hundred Eighty?

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Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

One Hundred Eighty (180) is a number that comes after 179 and before 181. It is a three-digit number, meaning it has a hundreds place, a tens place, and a ones place.

Simple Example

Quick Example

Imagine your favourite cricket team scored 180 runs in a T20 match. This means they scored one hundred and eighty runs in total. It's a good score, often enough to win!

Worked Example

Step-by-Step

Let's say you have 175 rupees, and your friend gives you 5 more rupees. How much money do you have now?

Step 1: Start with the money you already have: 175 rupees.
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Step 2: Add the money your friend gave you: + 5 rupees.
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Step 3: Add the ones digits: 5 + 5 = 10. Write down 0 in the ones place and carry over 1 to the tens place.
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Step 4: Add the tens digits, including the carried over 1: 7 + 1 (carried over) = 8. Write down 8 in the tens place.
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Step 5: Add the hundreds digits: 1 (from 175) = 1. Write down 1 in the hundreds place.
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Answer: You now have 180 rupees.

Why It Matters

Understanding numbers like 180 is fundamental to all of mathematics and science. From counting money as a shopkeeper to calculating distances as a pilot, or even designing buildings as an architect, numbers are everywhere. It's the building block for future learning!

Common Mistakes

MISTAKE: Writing 108 instead of 180 when hearing 'one hundred eighty'. | CORRECTION: Remember 'eighty' means 8 tens (80), so it should be 1-8-0. 'One hundred eight' is 1-0-8.

MISTAKE: Confusing the order of digits, like writing 810 instead of 180. | CORRECTION: The 'one hundred' part means the 1 comes first, followed by the 'eighty' part (80).

MISTAKE: Forgetting the zero in the ones place when writing 180. | CORRECTION: 'Eighty' means 8 tens and 0 ones. So the zero is important to show there are no extra ones.

Practice Questions

Try It Yourself

QUESTION: How many tens are there in 180? | ANSWER: 18 tens

QUESTION: If you have 100 rupees and your cousin gives you 80 rupees, how much money do you have in total? | ANSWER: 180 rupees

QUESTION: A bus journey from Delhi to Jaipur is 280 km. If you have already travelled 100 km, how much distance is left to travel? | ANSWER: 180 km

MCQ

Quick Quiz

Which of these represents the number one hundred eighty?

108

180

810

The Correct Answer Is:

Option C, 180, correctly shows one hundred, followed by eighty (8 tens and 0 ones). Options A, B, and D represent different numbers.

Real World Connection

In the Real World

Many things in India involve 180! A standard auto-rickshaw fare might be 180 rupees for a longer distance. If you're building a house, a carpenter might measure a wooden plank that is 180 centimetres long. Even the total marks for a subject in your school exams could be 180.

Key Vocabulary

Key Terms

DIGIT: A single symbol used to make numbers (0, 1, 2, etc.) | PLACE VALUE: The value of a digit based on its position in a number (ones, tens, hundreds) | THREE-DIGIT NUMBER: A number that has three digits | HUNDREDS PLACE: The third position from the right in a number, representing multiples of 100

What's Next

What to Learn Next

Now that you understand 180, you can explore other three-digit numbers and how to compare them. You can also learn about adding and subtracting larger numbers, which builds directly on this foundational knowledge. Keep up the great work!