What is Fifty (50)? | Simple Explanation for Class 5-10

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What is Fifty?

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Fifty is the natural number that comes after forty-nine and before fifty-one. It is written as '50' and represents a quantity of 5 sets of ten.

Simple Example

Quick Example

Imagine you have five 10-rupee notes. If you count them together, you have 10 + 10 + 10 + 10 + 10 rupees, which totals 50 rupees. So, five 10-rupee notes make fifty rupees.

Worked Example

Step-by-Step

Let's find out how many 5-rupee coins make fifty rupees.

1. We want to reach the number 50.
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2. We are using 5-rupee coins.
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3. We can count by fives: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50.
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4. Now, let's count how many times we said '5' to reach '50'.
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5. We said '5' ten times.
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6. So, ten 5-rupee coins make fifty rupees.

Answer: Ten 5-rupee coins.

Why It Matters

Understanding numbers like fifty is fundamental to all mathematics and science. It helps you count, measure, and understand quantities in daily life. From being a shopkeeper to an engineer, knowing numbers is crucial for managing money, designing structures, and solving problems.

Common Mistakes

MISTAKE: Confusing fifty (50) with fifteen (15) or fifty-five (55). | CORRECTION: Remember 'fifty' starts with 'f' and has 'ty' at the end, meaning 5 tens. 'Fifteen' has 'teen' at the end, meaning 1 ten and 5 ones. 'Fifty-five' is 50 + 5.

MISTAKE: Writing '05' instead of '50' when asked to write fifty. | CORRECTION: '05' means five. '50' means fifty. The position of the digit matters a lot in numbers.

MISTAKE: Thinking that 50 is a small number and not important. | CORRECTION: 50 is a significant number! It's half of 100, often used for percentages (50% means half) and for dividing things into two equal parts.

Practice Questions

Try It Yourself

QUESTION: If you score 50 runs in a cricket match, how many more runs do you need to score a century (100 runs)? | ANSWER: 50 runs (100 - 50 = 50)

QUESTION: A box can hold 10 ladoos. How many ladoos are there in 5 such boxes? | ANSWER: 50 ladoos (5 boxes * 10 ladoos/box = 50 ladoos)

QUESTION: Your school trip budget is Rs 500. If 10 students are going and each student's share is Rs 50, have you collected enough money? | ANSWER: Yes, you have collected exactly enough (10 students * Rs 50/student = Rs 500)

MCQ

Quick Quiz

Which of these represents 'fifty'?

The Correct Answer Is:

Option C, '50', is the correct way to write fifty. Option A is five, B is fifteen, and D is fifty-five.

Real World Connection

In the Real World

You see '50' everywhere in India! A common example is when you buy groceries – a packet of biscuits might cost Rs 50, or you might get a 50% discount during a sale on your favorite clothes. Even a auto-rickshaw driver might charge you Rs 50 for a short ride.

Key Vocabulary

Key Terms

NUMBER: A count or measure | DIGIT: A single symbol used to write numbers (0-9) | QUANTITY: The amount or number of something | PLACE VALUE: The value of a digit based on its position in a number | TENS: Groups of ten units

What's Next

What to Learn Next

Now that you understand what fifty is, you can explore larger numbers like one hundred and beyond. This will help you count bigger quantities, understand percentages better, and master more complex math problems!