NCERT Revision Notes for Class 3 Maths Chapter 7: Raksha Bandhan – Free PDF Download

Chapter 7 of Class 3 Maths, Raksha Bandhan, uses the festival of Raksha Bandhan and the making of rakhis to teach children about patterns, symmetry, and simple measurement, connecting maths to a familiar cultural celebration.

Last Updated: September 23, 2026

Key Concepts

Patterns in designs: repeating or growing patterns of colours, beads, or shapes, as often seen in rakhi designs.

Symmetry: a rakhi or its design often has one half that mirrors the other half, showing a line of symmetry.

Measuring length: measuring the length of thread or ribbon needed to make a rakhi, using centimetres or metres.

Counting and grouping materials: counting beads, threads, or decorations needed for making a certain number of rakhis, sometimes using equal grouping.

Simple money and cost problems: calculating the total cost of materials bought to make rakhis, connecting to addition and money concepts.

Worked Examples

Example 1

A rakhi design uses the pattern: red bead, yellow bead, red bead, yellow bead. What comes next? A red bead, continuing the repeating pattern.

Example 2

If one rakhi needs 25 cm of thread, how much thread is needed for 4 rakhis? 25 cm x 4 = 100 cm, or 1 metre.

Example 3

A packet of beads costs Rs 30 and a packet of thread costs Rs 15. What is the total cost of both? Rs 30 + Rs 15 = Rs 45.

Quick Recap

• Rakhi designs often use repeating or symmetric patterns of colours and beads.
• A shape or design is symmetric if one half mirrors the other half exactly.
• Length of thread or ribbon can be measured and multiplied to find the total needed for several rakhis.
• Counting and grouping materials connects this chapter to earlier grouping and sharing ideas.
• Adding the cost of different materials gives the total cost of making rakhis.

Common Mistakes to Avoid

• Missing the repeating unit in a longer rakhi pattern and guessing the next item incorrectly.
• Confusing symmetry with simply having two similar-looking halves that do not actually match exactly.
• Making conversion errors between centimetres and metres while calculating total thread length.
• Adding costs incorrectly when combining the price of multiple materials.
• Forgetting to multiply the length needed per rakhi by the total number of rakhis being made.

Home Practice Tips

• Look at real rakhi designs, if available, and identify the pattern and any symmetry in them.
• Measure a length of thread or ribbon at home and calculate how much would be needed for several pieces.
• Create a simple repeating pattern using beads or coloured paper together.
• Practise adding the cost of two or three craft materials to find a total.
• Fold a paper cut-out of a simple rakhi shape to check for a line of symmetry.

Frequently Asked Questions

Q1. Why does this chapter use Raksha Bandhan as its theme?
Making rakhis naturally involves patterns, symmetry, measuring thread, and simple cost calculations, making it an engaging, culturally familiar way to combine several maths skills.

Q2. How can I help my child understand symmetry through rakhi designs?
Look at or draw a simple rakhi design together and check if folding it down the middle makes both halves match exactly.

Q3. What measurement skills does this chapter use?
It uses length measurement in centimetres and metres, often combined with multiplication to find the total material needed for multiple rakhis.

Q4. How are money concepts connected in this chapter?
Simple addition of the cost of materials, like beads and thread, is used to find the total cost of making rakhis, connecting back to earlier money chapters.

Q5. Is this chapter only about crafts, or does it teach maths skills too?
While the theme is craft-based, the chapter focuses on genuine maths skills — patterns, symmetry, measurement, and simple money calculations — using rakhi-making as an engaging context.

Full walkthrough: Chapter 7 Solutions for step-by-step textbook answers.

Written by Satish

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