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Tamil Nadu (TNBSE)Class 1 Mathematics★ 3-5 marks in TN Class 1 Term 3 exam — coin/note identification, simple addition with money, and basic word problems

Money

Samacheer Kalvi (TN State Board) Class 1 Mathematics — Chapter 6, Money. Coins and simple transactions. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

⏱ 10 min readEasy difficulty✓ Free · NCERT-aligned

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By the end of this chapter you'll be able to…

1Identify Indian coins by name and value: ₹1, ₹2, ₹5, ₹10 (and the now-discontinued ₹10 coin as reference)
2Identify Indian currency notes by value: ₹10, ₹20, ₹50, ₹100, ₹200, ₹500 (basic recognition of colours and key images)
3Write amounts using the ₹ symbol — e.g., ₹5 means five rupees
4Add amounts using only ₹1 or ₹10 coins — e.g., ₹1 + ₹1 + ₹2 = ₹4
5Solve simple word problems: 'An eraser costs ₹4. You have ₹10. How much change will you get back?'
6Understand the concept of saving money in a piggy bank (சேமிப்பு / undiyal)

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Why this chapter matters

Money is one of the most practical chapters a child learns. It connects maths to real life — the child who understands money can go to a shop, count coins, and know if they have enough to buy a pencil or a toffee. This chapter teaches Indian currency identification (coins and notes), simple addition with rupees, and the important habit of saving. The ₹ symbol itself was designed by Udaya Kumar, a Tamilian from Tamil Nadu.

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Money — Class 1 Mathematics (Samacheer Kalvi)

TN State Board (Samacheer Kalvi) Class 1 Mathematics, Chapter 6. Coins and simple transactions.

1. About this chapter

This chapter covers Money as part of the Class 1 Samacheer Kalvi Mathematics curriculum. It deals with coins and simple transactions and builds conceptual understanding essential for the TN School Term Exam.

By the end of this chapter, students will be able to:

Identify common coins
Solve simple shopping problems

2. Key concepts

Concept 1: Identify common coins.
Concept 2: Solve simple shopping problems.

3. Important terms and formulas

Term / Formula	Description
Identify common coins…	Identify common coins
Solve simple shopping problems…	Solve simple shopping problems

4. Worked examples

Example 1. Applying a key concept from this chapter.

Solution: Identify the relevant principle → apply the formula or rule → state the answer with correct units.

Example 2. A typical exam-style question on money.

Solution: Break the problem into steps, use the appropriate formula and verify the answer.

5. Common mistakes

Mistake: Skipping units or forgetting to state them. Fix: Always write units alongside every quantity and answer.
Mistake: Confusing similar terms or concepts in this chapter. Fix: Make a comparison table of the terms during revision.

6. Practice (exam-style)

Define the main term or principle covered in Chapter 6.
Give two real-life examples related to money.
Solve a short numerical or descriptive question from this chapter.
State one important formula and explain each symbol.

7. Answer key (hints)

Refer to section 2 (Key concepts) above for the definition.
Examples should be drawn from daily experience and local context.
Apply the formula from section 3, show all steps clearly.
Formula with units — refer to the textbook glossary for symbol meanings.

8. Quick revision

Class 1 Mathematics — Chapter 6: Money.
Core idea: Coins and simple transactions.
Key outcomes: Identify common coins; Solve simple shopping problems.
Always revise diagrams / tables from the Samacheer Kalvi textbook before the exam.

Key formulas & results

Everything you need to memorise, in one card. Screenshot this for revision.

Indian Currency — the ₹ symbol

₹ is the Indian Rupee symbol. It was designed by Udaya Kumar Dharmalingam, a professor from Tamil Nadu (born in Kallakurichi), and was adopted by the Government of India in 2010.

₹ is written BEFORE the number: ₹5, ₹10, ₹100. We read it as 'rupees'. ₹5 = five rupees. The symbol combines the Devanagari 'र' (Ra) and the Roman 'R'.

Indian coins (for Class 1 recognition)

₹1 coin — small, silver (steel). ₹2 coin — slightly bigger, silver with a rounded edge. ₹5 coin — thicker, golden-brass colour. ₹10 coin — biggest coin, two-tone (silver ring + golden centre).

Coins have the Ashoka Pillar (four lions) on one side and the value (₹1, ₹2, ₹5, ₹10) on the other. Hold coins in your hand and feel the difference in weight and size.

Indian currency notes (basic recognition)

₹10 — orange/brown, picture of Konark Sun Temple. ₹20 — greenish-yellow, picture of Ellora Caves. ₹50 — blue/fluorescent, picture of Hampi with chariot. ₹100 — lavender, picture of Rani ki Vav. ₹200 — bright orange, picture of Sanchi Stupa. ₹500 — stone grey, picture of Red Fort.

All notes have Mahatma Gandhi's picture. The back of each note shows a different Indian heritage monument. ₹2000 note was withdrawn in 2023 and is no longer in circulation.

Adding money — the piggy bank method

Count the coins one by one and add. 3 coins of ₹1 = ₹1 + ₹1 + ₹1 = ₹3. 2 coins of ₹5 = ₹5 + ₹5 = ₹10. One ₹5 coin + one ₹2 coin + one ₹1 coin = ₹5 + ₹2 + ₹1 = ₹8.

Always write the ₹ symbol before the number. For word problems, first write what you know, then calculate what is asked.

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Common mistakes & fixes

These are the exact errors that cost students marks in board exams. Read them once, save yourself the trouble.

WATCH OUT

✗ Forgetting to write the ₹ symbol before the number

✓ ₹ is as important as the number. Writing '5' instead of '₹5' can cost a mark. Always put ₹ before the amount.

WATCH OUT

✗ Confusing ₹5 coin and ₹10 coin because both are bigger

✓ ₹5 coin is golden-brass in colour (single metal). ₹10 coin is two-tone — silver outer ring with a golden centre. Look at the number written on the coin.

WATCH OUT

✗ Adding ₹5 + ₹2 and writing ₹52 (joining the numbers instead of adding)

✓ ₹5 + ₹2 = ₹7, NOT ₹52. You are adding the VALUES, not writing them next to each other. Use a number line or fingers to add.

WATCH OUT

✗ Getting confused in 'how much more is needed' problems

✓ If something costs ₹8 and you have ₹5, find: ₹8 − ₹5 = ₹3 more needed. Subtract what you have from what you need.

Practice problems

Try each one yourself before tapping "Show solution". Active recall > rereading.

Q1EASY· Identify

Which coin is golden-brass in colour — ₹1, ₹5, or ₹10?

▶ Show solution

₹5 coin (it is thicker and has a golden-brass colour)

Q2EASY· Addition

Add: ₹2 + ₹2 + ₹1 = ?

▶ Show solution

₹5

Q3EASY· Symbol

What is the symbol for Indian Rupee?

▶ Show solution

₹

Q4MEDIUM· Addition

Ravi has one ₹5 coin, one ₹2 coin, and one ₹1 coin. How much money does Ravi have in total?

▶ Show solution

₹5 + ₹2 + ₹1 = ₹8

Q5MEDIUM· Word problem

A toffee costs ₹6. Meena has only ₹4. How much more money does she need?

▶ Show solution

₹6 − ₹4 = ₹2 more needed

Q6HARD· Word problem

Kumar has ₹10. He buys a pen for ₹7. How much money is left? Can he also buy a ₹5 eraser?

▶ Show solution

₹10 − ₹7 = ₹3 left. No, he cannot buy the ₹5 eraser because he only has ₹3. He needs ₹2 more.

5-minute revision

The whole chapter, distilled. Read this the night before the exam.

•₹ is the Indian Rupee symbol. Write it before the number: ₹5, ₹10, ₹100.
•Coins: ₹1 (silver), ₹2 (silver), ₹5 (golden-brass), ₹10 (two-tone — silver + golden).
•Notes: ₹10 (orange), ₹20 (green), ₹50 (blue), ₹100 (lavender), ₹200 (orange), ₹500 (grey).
•All Indian notes have Mahatma Gandhi's picture.
•Adding money: count values, not number of coins. ₹5 + ₹2 = ₹7.
•Saving money in a piggy bank (undiyal/சேமிப்பு) is a good habit.

Tamil Nadu (TNBSE) marks blueprint

Where the marks come from in this chapter — so you can plan your prep.

Typical chapter weightage: 3-5 marks in TN Class 1 Term 3 Mathematics exam

Question type	Marks each	Typical count	What it tests
Coin/Note identification	1 each	2-3	Matching coins/notes to their values
Total count (addition)	1-2	1-2	Adding coins to find the total amount
Word problem	2	1	Simple shopping problem — how much more, how much left

Prep strategy

Keep real or play coins and notes at home. Practise identifying them — name the value of each.
Practise adding small coin groups: ₹2 + ₹1, ₹5 + ₹5, ₹10 + ₹5, etc.
Role-play a shop: 'I want to buy this pencil. It costs ₹5. I give you ₹10. Give me ₹5 change.'
Start a real piggy bank — drop coins in and count the total every month.

Where this shows up in the real world

This chapter isn't just an exam topic — it lives in the world around you.

Buying at a shop

Children watch their parents buy things every day. This chapter gives them the confidence to handle small purchases — counting coins, knowing if they have enough money, and understanding change.

Piggy bank / Undiyal tradition

In Tamil households, the undiyal (piggy bank) is a common tradition. Children drop coins in and break it open on auspicious days. It teaches patience and the value of small savings adding up.

Digital payments awareness

While Class 1 only covers physical currency, children see UPI payments (GPay, PhonePe) everywhere. Teachers often mention that money exists in both physical and digital forms.

Exam strategy

Battle-tested tips from teachers and toppers for this chapter.

Coin questions: Look at the colour and size. Silver = ₹1 or ₹2. Golden = ₹5. Two-tone = ₹10.
Addition: Add the VALUES of coins, not the number of coins. ₹2 + ₹2 = ₹4, not 2 coins = 2.
Word problems: Read twice. First find what you know, then find what is asked. Use subtraction for 'how much more' and 'how much left'.
Always write ₹ before the amount. ₹5 not 5₹.

Going beyond the textbook

For olympiad aspirants and curious learners — topics that build on this chapter.

If you have 3 coins and the total is ₹11, what coins could you have? (₹5 + ₹5 + ₹1 or ₹10 + ₹1).
You buy two items: a ₹4 chocolate and a ₹3 pencil. You give ₹10. How much change? (₹10 − ₹7 = ₹3).
What is the minimum number of coins needed to make ₹8? (₹5 + ₹2 + ₹1 = 3 coins).

Where else this chapter is tested

CBSE board isn't the only one — other exams test this chapter too.

TN School Term 3 ExamHigh

School Unit TestsHigh

Maths Olympiad (IMO Class 1)Medium

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Questions students ask

The real ones — pulled from the Q&A community and tutor sessions.

The ₹ symbol was designed by Udaya Kumar Dharmalingam, a professor born in Kallakurichi, Tamil Nadu. The Government of India adopted it in 2010.

₹5 coin is single metal — golden-brass colour. ₹10 coin has TWO colours — a silver outer ring with a golden centre. Also, the number is written on the coin.

Saving money means keeping some money aside instead of spending it all. If you save, you can buy something bigger later or help someone in need. A piggy bank is a fun way to start saving.

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