Multi-Digit Subtraction with Regrouping
Quick recap of borrowing plus a way to ask for help.
1 Concept recap
Multi-digit subtraction in 30 seconds.
Subtracting with regrouping
- Borrow first: top digit grows by 10 before subtracting.
- Across zeros: 400 → 3H, 9T, 10O.
- Check: difference + subtracted = start.
- Estimate first to stay reasonable.
2 Ask a tutor
Stuck on a borrowing problem? Send a question.
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