NCERT Revision Notes for Class 2 Maths Chapter 6: Decoration for Festival – Free PDF Download

A quick summary of Class 2 Maths Chapter 6 — two-digit addition and subtraction, with and without regrouping.

Last Updated: September 10, 2026

Class 2 Maths Chapter 6 Revision Notes: Decoration for Festival

Chapter type: Arithmetic — two-digit addition and subtraction, including regrouping (carrying/borrowing).

Key ideas to remember:

Addition without regrouping xe2x80x94 add the ones together and the tens together separately, when the ones sum is less than 10.

Addition with regrouping (carrying) xe2x80x94 when the ones add up to 10 or more, write the ones digit of the sum and carry 1 ten to the tens column.

Subtraction without regrouping xe2x80x94 subtract ones from ones and tens from tens directly, when the top ones digit is big enough.

Subtraction with regrouping (borrowing) xe2x80x94 when the ones digit on top is smaller than the ones digit being subtracted, borrow 1 ten from the tens column first.

What you should be able to do after this chapter:

1. Add two two-digit numbers, with or without carrying.
2. Subtract one two-digit number from another, with or without borrowing.
3. Solve simple word problems involving festival shopping or sharing using addition and subtraction.

Remember: Always add or subtract the ones column first, then the tens column — and check whether you need to carry (in addition) or borrow (in subtraction) before moving on.

Frequently Asked Questions

Which is harder — addition or subtraction with regrouping?
Most children find subtraction with borrowing slightly trickier than addition with carrying, so it is worth extra practice.

How does this chapter connect to later topics?
It is the direct foundation for larger addition and subtraction (with 3-digit numbers) in Class 3’s House of Hundreds chapters.

Written by Satish

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