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    Subtraction with Regrouping: 90 − 19

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 90 − 19?

    Answer

    90 − 19 =
    71

    With regrouping: 1 borrow — from the tens

    90 − 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.
    8+10
    9(was 9, now 8)0 (was 0, now 10)
    −19
    71

    Column by column: 90 − 19

    • Ones: 0 is less than 9 — borrow 1 ten: tens 9 → 8; 10 − 9 = 1 — write 1.
    • Tens: after borrowing, 8; 8 − 1 = 7 — write 7.

    90 − 19 = 71

    Second check: 90 − 71 = 19

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    90 − 19 = 71 - Subtraction with Regrouping. 90 − 19 = 71. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/90--19/generated.jpgCopy

    Column subtractions of 19

    ExampleDifference
    60 − 1941
    64 − 1945
    66 − 1947
    71 − 1952
    73 − 1954
    77 − 1958
    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
    Recalculate with different values ↑

    FAQ

    What is 90 − 19?

    90 − 19 = 71

    How do you check that 90 − 19 = 71?

    Add the difference and the subtrahend: 71 + 19 = 90. Getting the minuend back means the difference is right.

    How many times do you borrow in 90 − 19?

    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