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

A quick summary of Class 3 Maths Chapter 7 — 3-digit addition and subtraction with regrouping, in a festival-shopping context.

Last Updated: September 10, 2026

Class 3 Maths Chapter 7 Revision Notes: Raksha Bandhan

Chapter type: Arithmetic — 3-digit addition and subtraction, including regrouping.

Key ideas to remember:

3-digit addition with carrying xe2x80x94 when a column’s sum is 10 or more, write the ones digit and carry 1 to the next column left.

3-digit subtraction with borrowing xe2x80x94 when the digit on top is smaller than the digit being subtracted, borrow 1 from the next column left.

Checking subtraction xe2x80x94 add the answer to the number subtracted — it should equal the original number.

What you should be able to do after this chapter:

1. Add two 3-digit numbers, carrying where needed.
2. Subtract one 3-digit number from another, borrowing where needed.
3. Solve word problems involving 3-digit addition and subtraction, and check subtraction answers by adding back.

Remember: Always work column by column from the right (ones first, then tens, then hundreds) — and whenever you borrow from a column, remember to reduce that column’s digit by 1 before continuing.

Frequently Asked Questions

Is borrowing across a zero (like in 500 – 234) harder?
Yes, it is one of the trickier cases — you may need to borrow from the hundreds column when the tens column is 0, so extra practice with examples like this helps.

How does this chapter connect to later ones?
House of Hundreds xe2x80x93 II continues with more 3-digit number and operation practice, building directly on the regrouping skill from this chapter.

Written by Satish

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