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    Subtraction with Regrouping: 120 − 15

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 120 − 15?

    Answer

    120 − 15 =
    105

    With regrouping: 1 borrow — from the tens

    120 − 15 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
    1 2(was 2, now 1)0 (was 0, now 10)
    −15
    105

    Column by column: 120 − 15

    • Ones: 0 is less than 5 — borrow 1 ten: tens 2 → 1; 10 − 5 = 5 — write 5.
    • Tens: after borrowing, 1; 1 − 1 = 0 — write 0.
    • Hundreds: nothing to subtract — write 1.

    120 − 15 = 105

    Second check: 120 − 105 = 15

    Similar examples to practise

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    120 − 15 = 105 - Subtraction with Regrouping. 120 − 15 = 105. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/120--15/generated.jpgCopy

    Column subtractions of 15

    ExampleDifference
    86 − 1571
    89 − 1574
    91 − 1576
    93 − 1578
    98 − 1583
    100 − 1585
    104 − 1589
    107 − 1592
    109 − 1594
    113 − 1598
    120 − 15105
    151 − 15136
    187 − 15172
    218 − 15203
    254 − 15239
    283 − 15268
    322 − 15307
    363 − 15348
    391 − 15376
    417 − 15402
    Recalculate with different values ↑

    FAQ

    What is 120 − 15?

    120 − 15 = 105

    How do you check that 120 − 15 = 105?

    Add the difference and the subtrahend: 105 + 15 = 120. Getting the minuend back means the difference is right.

    How many times do you borrow in 120 − 15?

    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