NCERT Revision Notes for Class 3 Maths Chapter 2: Toy Joy – Free PDF Download

Chapter 2 of Class 3 Maths, Toy Joy, uses a toy shop setting to build addition and subtraction skills with numbers up to a few hundred, including practical word problems about buying, pricing, and comparing costs of toys.

Last Updated: September 23, 2026

Key Concepts

Addition of larger numbers: adding two- and three-digit numbers by lining up ones, tens, and hundreds correctly, including regrouping when needed.

Subtraction of larger numbers: subtracting two- and three-digit numbers, including borrowing across tens and hundreds when required.

Estimating totals: making a quick, rounded guess of a total cost before calculating the exact answer, to check if the final answer seems reasonable.

Comparing prices: using subtraction or direct comparison to find how much more expensive one toy is compared to another.

Solving money word problems: turning toy shop situations, like buying multiple toys or calculating change, into addition or subtraction number sentences.

Worked Examples

Example 1

A toy car costs Rs 145 and a toy train costs Rs 220. What is the total cost of both toys? Rs 145 + Rs 220 = Rs 365.

Example 2

A doll costs Rs 180. If Rohan pays with a Rs 200 note, how much change should he get back? Rs 200 − Rs 180 = Rs 20.

Example 3

Which toy is more expensive: a puzzle costing Rs 95 or a ball costing Rs 75, and by how much? The puzzle is more expensive by Rs 95 − Rs 75 = Rs 20.

Quick Recap

• When adding or subtracting larger numbers, line up ones, tens, and hundreds carefully.
• Regrouping (carrying and borrowing) is often needed with two- and three-digit numbers.
• Estimating a total first helps check whether the exact calculated answer makes sense.
• Finding how much more expensive one item is than another uses subtraction.
• Real-life toy shop word problems help connect addition and subtraction to everyday situations.

Common Mistakes to Avoid

• Misaligning the ones, tens, and hundreds columns while adding or subtracting.
• Forgetting to carry or borrow correctly during regrouping.
• Using addition when a word problem actually requires subtraction, or the other way around.
• Making small arithmetic slips when working with larger three-digit numbers.
• Not checking whether the final answer is reasonable compared to a quick estimate.

Home Practice Tips

• Look at real or pretend price tags on toys and practise adding or comparing their costs.
• Practise a few three-digit addition and subtraction sums daily, including regrouping questions.
• Play a shopping game where the child calculates totals and change using play money.
• Ask the child to estimate a total cost before calculating the exact answer.
• Create simple toy shop word problems together to solve as a fun activity.

Frequently Asked Questions

Q1. Why does this chapter use a toy shop theme?
Buying toys and calculating costs is a relatable, everyday situation that makes practising addition, subtraction, and money-based word problems more engaging for children.

Q2. How can I help my child with regrouping in larger addition and subtraction sums?
Use place value blocks or bundles of ten to physically show carrying and borrowing before moving to just writing the numbers.

Q3. Why is estimating a total before calculating useful?
Estimating gives a rough idea of what the answer should look like, helping children quickly spot a mistake if their exact calculated answer is very different.

Q4. What kind of word problems appear in this chapter?
Word problems about buying one or more toys, finding change, and comparing the prices of different toys are common in this chapter.

Q5. How does this chapter build on earlier addition and subtraction chapters?
It extends the two-digit addition and subtraction skills from Class 2 to slightly larger numbers and more varied, realistic word problems.

Full walkthrough: Chapter 2 Solutions for step-by-step textbook answers.

Written by Satish

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