Math
Long Subtraction Calculator
Subtract two numbers, column by column.
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Long subtraction aligns numbers by place value and subtracts each column, borrowing when needed.
The math behind it
Subtract column by column from the right; if the top digit is smaller, borrow 10 from the next column.
Worked Example
8003 − 2547 = 5456.
Frequently Asked Questions
What is borrowing?
Taking 10 from the next column to the left when the current top digit is too small to subtract from.
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