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    Subtraction with Regrouping: 387 − 39

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 387 − 39?

    Answer

    387 − 39 =
    348

    With regrouping: 1 borrow — from the tens

    387 − 39 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.
    7+10
    3 8(was 8, now 7)7 (was 7, now 17)
    −39
    348

    Column by column: 387 − 39

    • Ones: 7 is less than 9 — borrow 1 ten: tens 8 → 7; 17 − 9 = 8 — write 8.
    • Tens: after borrowing, 7; 7 − 3 = 4 — write 4.
    • Hundreds: nothing to subtract — write 3.

    387 − 39 = 348

    Second check: 387 − 348 = 39

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    387 − 39 = 348 - Subtraction with Regrouping. 387 − 39 = 348. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/387--39/generated.jpgCopy

    Column subtractions of 39

    ExampleDifference
    131 − 3992
    133 − 3994
    137 − 3998
    144 − 39105
    175 − 39136
    211 − 39172
    242 − 39203
    278 − 39239
    307 − 39268
    346 − 39307
    387 − 39348
    400 − 39361
    415 − 39376
    441 − 39402
    492 − 39453
    500 − 39461
    524 − 39485
    575 − 39536
    600 − 39561
    617 − 39578
    Recalculate with different values ↑

    FAQ

    What is 387 − 39?

    387 − 39 = 348

    How do you check that 387 − 39 = 348?

    Add the difference and the subtrahend: 348 + 39 = 387. Getting the minuend back means the difference is right.

    How many times do you borrow in 387 − 39?

    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