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    Subtraction with Regrouping: 123 − 34

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 123 − 34?

    Answer

    123 − 34 =
    89

    With regrouping: 2 borrows — from the tens and the hundreds

    123 − 34 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.
    011+10
    1(was 1, now 0)2(was 2, now 11)3 (was 3, now 13)
    −34
    89

    Column by column: 123 − 34

    • Ones: 3 is less than 4 — borrow 1 ten: tens 2 → 1; 13 − 4 = 9 — write 9.
    • Tens: after borrowing, 1; 1 is less than 3 — borrow 1 hundred: hundreds 1 → 0; 11 − 3 = 8 — write 8.
    • Hundreds: after borrowing, 0 — a leading zero is not written.

    123 − 34 = 89

    Second check: 123 − 89 = 34

    Similar examples to practise

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    https://calculat.io/en/number/long-subtraction/123--34Copy
    <a href="https://calculat.io/en/number/long-subtraction/123--34">123 − 34 = 89 - Subtraction with Regrouping - Calculatio</a>Copy
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    123 − 34 = 89 - Subtraction with Regrouping. 123 − 34 = 89. Subtraction with regrouping step by step: 2 borrows, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/123--34/generated.jpgCopy

    Column subtractions of 34

    ExampleDifference
    97 − 3463
    99 − 3465
    101 − 3467
    103 − 3469
    105 − 3471
    108 − 3474
    110 − 3476
    112 − 3478
    117 − 3483
    119 − 3485
    123 − 3489
    126 − 3492
    128 − 3494
    132 − 3498
    139 − 34105
    170 − 34136
    206 − 34172
    237 − 34203
    273 − 34239
    302 − 34268
    Recalculate with different values ↑

    FAQ

    What is 123 − 34?

    123 − 34 = 89

    How do you check that 123 − 34 = 89?

    Add the difference and the subtrahend: 89 + 34 = 123. Getting the minuend back means the difference is right.

    How many times do you borrow in 123 − 34?

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

    See Also