Class 2 (SSC) • Mathematics (गणित)Chapter 3: Subtraction with Regrouping⭐ Topic 1
Subtraction with Regrouping
Subtraction with regrouping (borrowing) is used when the top digit is smaller than the bottom digit, requiring us to borrow from the tens pl
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When subtracting, if the ones digit on top is smaller than the ones digit on bottom, we borrow 1 ten from the tens column.
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- Regrouping used when top digit is smaller.
- Also called 'borrowing'.
- Example: 42-15, borrow from tens.
- 12-5=7, then 3-1=2, giving 27.
- We borrow 1 ten from the tens column.
- This helps subtract accurately.
- It's needed even with smaller top digits.
- Practice builds confidence with bigger numbers.
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subtraction with regroupingssc class 2