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    Subtraction with Regrouping: 108 − 19

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 108 − 19?

    Answer

    108 − 19 =
    89

    With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

    108 − 19 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.
    09+10
    1(was 1, now 0)0(was 0, now 9)8 (was 8, now 18)
    −19
    89

    Column by column: 108 − 19

    • Ones: 8 is less than 9 — borrow 1 hundred across the zero: hundreds 1 → 0, tens 0 → 9; 18 − 9 = 9 — write 9.
    • Tens: after borrowing, 9; 9 − 1 = 8 — write 8.
    • Hundreds: after borrowing, 0 — a leading zero is not written.

    108 − 19 = 89

    Second check: 108 − 89 = 19

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    108 − 19 = 89 - Subtraction with Regrouping. 108 − 19 = 89. Subtraction with regrouping step by step: 2 borrows across a zero, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/108--19/generated.jpgCopy

    Column subtractions of 19

    ExampleDifference
    82 − 1963
    84 − 1965
    86 − 1967
    88 − 1969
    90 − 1971
    93 − 1974
    95 − 1976
    97 − 1978
    102 − 1983
    104 − 1985
    108 − 1989
    111 − 1992
    113 − 1994
    117 − 1998
    124 − 19105
    155 − 19136
    191 − 19172
    222 − 19203
    258 − 19239
    287 − 19268
    Recalculate with different values ↑

    FAQ

    What is 108 − 19?

    108 − 19 = 89

    How do you check that 108 − 19 = 89?

    Add the difference and the subtrahend: 89 + 19 = 108. Getting the minuend back means the difference is right.

    How many times do you borrow in 108 − 19?

    2 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 108 − 19?

    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