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    Subtraction with Regrouping: 20,387 − 8,042

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 20,387 − 8,042?

    Answer

    20,387 − 8,042 =
    12,345

    With regrouping: 1 borrow — from the ten thousands

    20,387 − 8,042 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.
    1+10
    2(was 2, now 1)0 (was 0, now 10)3 8 7
    −8042
    12345

    Column by column: 20,387 − 8,042

    • Ones: 7 − 2 = 5 — write 5.
    • Tens: 8 − 4 = 4 — write 4.
    • Hundreds: 3 − 0 = 3 — write 3.
    • Thousands: 0 is less than 8 — borrow 1 ten thousand: ten thousands 2 → 1; 10 − 8 = 2 — write 2.
    • Ten thousands: after borrowing, 1; nothing to subtract — write 1.

    20,387 − 8,042 = 12,345

    Second check: 20,387 − 12,345 = 8,042

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    https://calculat.io/en/number/long-subtraction/20387--8042Copy
    <a href="https://calculat.io/en/number/long-subtraction/20387--8042">20,387 − 8,042 = 12,345 - Subtraction with Regrouping</a>Copy
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    20,387 − 8,042 = 12,345 - Subtraction with Regrouping. 20,387 − 8,042 = 12,345. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/20387--8042/generated.jpgCopy

    Column subtractions of 8,042

    ExampleDifference
    20,382 − 8,04212,340
    20,383 − 8,04212,341
    20,384 − 8,04212,342
    20,385 − 8,04212,343
    20,386 − 8,04212,344
    20,387 − 8,04212,345
    20,388 − 8,04212,346
    20,389 − 8,04212,347
    20,390 − 8,04212,348
    20,391 − 8,04212,349
    20,392 − 8,04212,350
    Recalculate with different values ↑

    FAQ

    What is 20,387 − 8,042?

    20,387 − 8,042 = 12,345

    How do you check that 20,387 − 8,042 = 12,345?

    Add the difference and the subtrahend: 12,345 + 8,042 = 20,387. Getting the minuend back means the difference is right.

    How many times do you borrow in 20,387 − 8,042?

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

    See Also