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    Subtraction with Regrouping: 504 − 128

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 504 − 128?

    Answer

    504 − 128 =
    376

    With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

    504 − 128 in a column. Above the columns: the values after borrowing — a crossed-out digit is replaced by the number above it; +10 marks a column that received a borrowed ten.
    49+10
    5(was 5, now 4)0(was 0, now 9)4 (was 4, now 14)
    −128
    376

    Column by column: 504 − 128

    • Ones: 4 is less than 8 — borrow 1 hundred across the zero: hundreds 5 → 4, tens 0 → 9; 14 − 8 = 6 — write 6.
    • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
    • Hundreds: after borrowing, 4; 4 − 1 = 3 — write 3.

    504 − 128 = 376

    Second check: 504 − 376 = 128

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    <a href="https://calculat.io/en/number/long-subtraction/504--128">504 − 128 = 376 - Subtraction with Regrouping - Calculatio</a>Copy
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    504 − 128 = 376 - Subtraction with Regrouping. 504 − 128 = 376. Subtraction with regrouping step by step: 2 borrows across a zero, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/504--128/generated.jpgCopy

    Column subtractions of 128

    ExampleDifference
    331 − 128203
    342 − 128214
    367 − 128239
    384 − 128256
    396 − 128268
    419 − 128291
    435 − 128307
    453 − 128325
    476 − 128348
    482 − 128354
    504 − 128376
    517 − 128389
    530 − 128402
    555 − 128427
    581 − 128453
    596 − 128468
    613 − 128485
    647 − 128519
    664 − 128536
    692 − 128564
    Recalculate with different values ↑

    FAQ

    What is 504 − 128?

    504 − 128 = 376

    How do you check that 504 − 128 = 376?

    Add the difference and the subtrahend: 376 + 128 = 504. Getting the minuend back means the difference is right.

    How many times do you borrow in 504 − 128?

    2 borrows: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.

    Why does 0 become 9 when borrowing in 504 − 128?

    The zero has nothing to lend, so it first borrows 1 from its left neighbour and becomes 10; then it lends 1 to the column on its right and keeps 9.

    See Also