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    Subtraction with Regrouping: 10,000 − 23

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 10,000 − 23?

    Answer

    10,000 − 23 =
    9,977

    With regrouping across zeros: 4 borrows — 3 zeros in a row, so 1 ten thousand is passed down, each zero becomes 9, and 1 ten goes to the ones

    10,000 − 23 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.
    0999+10
    1(was 1, now 0)0(was 0, now 9)0(was 0, now 9)0(was 0, now 9)0 (was 0, now 10)
    −23
    9977

    Column by column: 10,000 − 23

    • Ones: 0 is less than 3 — borrow 1 ten thousand across the zero: ten thousands 1 → 0, thousands 0 → 9, hundreds 0 → 9, tens 0 → 9; 10 − 3 = 7 — write 7.
    • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
    • Hundreds: after borrowing, 9; nothing to subtract — write 9.
    • Thousands: after borrowing, 9; nothing to subtract — write 9.
    • Ten thousands: after borrowing, 0 — a leading zero is not written.

    10,000 − 23 = 9,977

    Second check: 10,000 − 9,977 = 23

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    <a href="https://calculat.io/en/number/long-subtraction/10000--23">10,000 − 23 = 9,977 - Subtraction with Regrouping</a>Copy
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    10,000 − 23 = 9,977 - Subtraction with Regrouping. 10,000 − 23 = 9,977. Subtraction with regrouping step by step: 4 borrows across a zero, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/10000--23/generated.jpgCopy

    Column subtractions of 23

    ExampleDifference
    226 − 23203
    262 − 23239
    291 − 23268
    300 − 23277
    330 − 23307
    371 − 23348
    399 − 23376
    425 − 23402
    476 − 23453
    508 − 23485
    559 − 23536
    601 − 23578
    670 − 23647
    700 − 23677
    800 − 23777
    900 − 23877
    1,000 − 23977
    2,000 − 231,977
    5,000 − 234,977
    10,000 − 239,977
    Recalculate with different values ↑

    FAQ

    What is 10,000 − 23?

    10,000 − 23 = 9,977

    How do you check that 10,000 − 23 = 9,977?

    Add the difference and the subtrahend: 9,977 + 23 = 10,000. Getting the minuend back means the difference is right.

    How many times do you borrow in 10,000 − 23?

    4 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 10,000 − 23?

    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