🐟 Chapter 1 – The Fish Tale
Subject: Mathematics
Chapter Focus: Large Numbers, Place Value, Comparison, Estimation
📘 Introduction
In this chapter, we learn about large numbers using an interesting story about fishing and selling fish. Through this chapter, students will understand how big numbers are used in real life situations like business, markets, weight, money, and population.
🔢 Understanding Large Numbers
Large numbers are numbers which have many digits. Example:
| Number | Number Name |
|---|---|
| 5,000 | Five Thousand |
| 45,320 | Forty Five Thousand Three Hundred Twenty |
| 2,75,490 | Two Lakh Seventy Five Thousand Four Hundred Ninety |
🏷️ Place Value & Face Value
✔ Place Value
The value of a digit depending on its position is called Place Value.
| Digit | Place | Place Value |
|---|---|---|
| 7 | Thousands | 7 × 1000 = 7000 |
| 5 | Hundreds | 5 × 100 = 500 |
✔ Face Value
The digit itself is called its Face Value. Example: Face value of 7 is 7.
📊 Expanded Form
Writing a number as the sum of the place values of its digits is called Expanded Form.
⚖️ Comparing Numbers
To compare two numbers:
- Compare number of digits
- If digits are equal, compare place by place
📈 Ascending & Descending Order
Ascending Order: Smallest to greatest Descending Order: Greatest to smallest
| Ascending | Descending |
|---|---|
| 12,450 → 18,230 → 25,400 | 25,400 → 18,230 → 12,450 |
📐 Estimation & Rounding Off
Estimation means finding a value which is close to the actual value.
Round 3,478 to nearest thousand → 3,000
🧠 Real Life Application
Large numbers are used in:
- Fish markets 🐟
- Money transactions 💰
- Population count 🏙️
- Weights and measurements ⚖️
✍️ Practice Worksheet
Q2. Write the expanded form of 72,408
Q3. Find the place value of 6 in 3,46,291
Q4. Arrange in ascending order: 45,230, 32,120, 56,410
Q5. Round off 8,742 to nearest thousand
✅ Quick Revision
🎯 Chapter Complete
By mastering this chapter, students will feel confident working with large numbers and applying them in daily life situations.
📝 Complete Worksheet – The Fish Tale
Chapter: The Fish Tale
Goal: Practice all concepts & score full marks 🎯
Section A – Multiple Choice Questions (MCQs)
Q1. The place value of 6 in 46,382 is:
Q2. Which number is greatest?
Q3. Expanded form of 72,406 is:
✔ Q2 → (a) 4,52,310
✔ Q3 → (a) 70,000 + 2,000 + 400 + 6
Section B – Fill in the Blanks
1. The face value of 9 in 59,248 is ________
2. 1 lakh = __________
3. The smallest 5-digit number is __________
4. 6,78,432 rounded to nearest thousand is __________
✔ 1,00,000
✔ 10,000
✔ 6,78,000
Section C – Short Answer Questions
Q1. Write the number name of 3,45,678.
Q2. Find the place value of 7 in 5,72,418.
Q3. Write 65,402 in expanded form.
✔ 70,000
✔ 60,000 + 5,000 + 400 + 2
Section D – Arrange the Numbers
Q1. Arrange in ascending order:
45,320 32,450 56,210
Q2. Arrange in descending order:
7,25,430 7,52,430 7,05,430
✔ Descending → 7,52,430 → 7,25,430 → 7,05,430
Section E – Word Problems (Exam Focus)
Q1. A fisherman sold 4,56,780 kg of fish in a month. Write this number in words.
Q2. Estimate the total fish weight if 3,48,620 kg and 2,51,380 kg are sold.
✔ Estimated total ≈ 6,00,000 kg
Section F – Challenge / HOTS Questions ⭐
Q1. Write the greatest and smallest 6-digit numbers using digits 3, 7, 0, 4, 8, 2 (no repetition).
✔ Smallest → 2,0,3,4,7,8 = 203478
🎯 Worksheet Complete
✔ Revise place value & estimation
✔ Attempt MCQs first in exams
✔ Check answers after solving yourself