Subtract two whole numbers step by step and review the borrows used in long subtraction.
Last updated: June 2026 | By Patchworkr Team
Long subtraction subtracts digits from right to left, borrowing from the next column whenever the top digit is smaller than the bottom digit.
1234 - 567 = 667
What if the subtrahend is larger?
This visualizer rejects that case because long subtraction here is limited to nonnegative results.
Does the tool accept decimals?
No. The borrow-by-place-value display is designed for whole numbers only.
Why reject non-digits?
Malformed characters are rejected so the calculator does not silently alter the subtraction.
Can I subtract large numbers?
Yes. The digit-by-digit borrow logic handles arbitrarily long whole numbers.
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