Mathematics · Class 3

Active learning ideas

Money: Adding and Subtracting Amounts

Working with real coins and notes makes money calculations come alive for Class 3 learners. When students physically handle amounts, they move beyond abstract symbols to see how rupees and paise combine and separate during transactions. This hands-on practice builds both skill and confidence in everyday money tasks.

• CBSE Learning Outcomes
• NCERT Class 3, Chapter 14: Rupees and Paise - Adding and subtracting money.
• CBSE Syllabus Class 3: Money - Adds and subtracts small amounts of money with and without conversion.
• NEP 2020: Foundational Numeracy - Solves simple problems involving money.

• 20–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Role Play
• 40 min · Small Groups

Role Play: Mini Market Shop

Divide class into shopkeeper and buyer roles with priced fruits and vegetables using play rupees and paise. Buyers select 3-4 items, add totals aloud, and receive change. Switch roles after 10 minutes, with shopkeepers noting calculations on charts.

Analyze the most efficient way to add different amounts of money.

Facilitation Tip

During Role Play: Mini Market Shop, circulate with a small basket of coins to nudge pairs who forget to exchange ₹1 coins for 100 paise when borrowing during subtraction.

What to look for

Present students with a scenario: 'You bought a notebook for ₹15.50 and a pen for ₹8.00. How much did you spend in total?' Ask them to write down the calculation and the answer on a small whiteboard or paper.

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Activity 02

• Role Play
• 30 min · Pairs

Pairs: Shopping List Total

Pairs draw a shopping list of 5-6 household items with prices. They calculate total cost two ways: column addition and mental grouping. Discuss which method is faster and share with class.

Construct a shopping list and calculate the total cost.

Facilitation Tip

When Pairs: Shopping List Total work on their lists, remind students to align rupee and paise columns vertically in their notebooks to avoid place-value errors.

What to look for

Give each student a card with a purchase: 'You bought a toy car for ₹25.75 and paid with a ₹50 note.' Ask them to calculate the change they should receive and write it on the card. Collect these as they leave.

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Activity 03

• Role Play
• 25 min · Small Groups

Whole Class: Change Calculation Race

Project purchase scenarios on board, like ₹20 note for ₹14.75 bill. Teams race to board, subtract, show change with coins, and explain steps. Correct teams earn points.

Justify the importance of accurate money calculations in daily life.

Facilitation Tip

For Change Calculation Race, display a large subtraction model on the board so students can see how borrowing from ₹1 turns into 100 paise before subtracting.

What to look for

Ask students: 'Imagine you have ₹100. You want to buy a book for ₹45.50 and a pencil box for ₹30.00. Can you afford both? How do you know?' Facilitate a discussion where they explain their addition and comparison steps.

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Activity 04

• Role Play
• 20 min · Individual

Individual: Money Puzzle Sheets

Students solve worksheets matching amounts to coin combinations, then add or subtract pairs. They colour correct answers and self-check with answer keys before sharing one puzzle with neighbour.

Analyze the most efficient way to add different amounts of money.

What to look for

Present students with a scenario: 'You bought a notebook for ₹15.50 and a pen for ₹8.00. How much did you spend in total?' Ask them to write down the calculation and the answer on a small whiteboard or paper.

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

A few notes on teaching this unit

Teachers should start with concrete objects before moving to symbols, because research shows children aged 8-9 grasp money best through physical handling. Avoid rushing to algorithms; instead, let students verbalise steps while handling coins so their internal logic matches the action. Include frequent peer checks so children correct each other’s mistakes in real time.

By the end of these activities, students will add and subtract rupees and paise accurately in shopping scenarios, explain their regrouping steps clearly, and verify totals using play money or drawings. They will also justify change amounts and suggest efficient methods like grouping coins before adding.

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Watch Out for These Misconceptions

• During Pairs: Shopping List Total, watch for students who add only rupee parts first and leave paise aside.

  Ask pairs to sort play coins into rupee and paise piles, then combine paise first and physically carry over to rupees if needed before adding totals. Hold a quick group discussion where volunteers show their regrouping on the board.

• During Role Play: Mini Market Shop, watch for children who subtract paise directly when the paise part is smaller, leading to negative paise.

  Give each shopkeeper and customer a ₹1 coin to exchange for 100 paise whenever borrowing is needed; let students repeat the transaction until the correct change is found. Peers at adjacent stalls can verify the result before moving on.

• During Whole Class: Change Calculation Race, watch for students who confuse addition totals with subtraction change calculations in word problems.

  Label three stations clearly with green ‘Add’ and red ‘Subtract’ signs. Students rotate and solve only the labelled tasks, then justify their choice of operation to the next pair before checking answers together.

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Methods used in this brief

• Role Play