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    Subtraction with Regrouping: 91 − 17

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 91 − 17?

    Answer

    91 − 17 =
    74

    With regrouping: 1 borrow — from the tens

    91 − 17 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)1 (was 1, now 11)
    −17
    74

    Column by column: 91 − 17

    • Ones: 1 is less than 7 — borrow 1 ten: tens 9 → 8; 11 − 7 = 4 — write 4.
    • Tens: after borrowing, 8; 8 − 1 = 7 — write 7.

    91 − 17 = 74

    Second check: 91 − 74 = 17

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    91 − 17 = 74 - Subtraction with Regrouping. 91 − 17 = 74. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/91--17/generated.jpgCopy

    Column subtractions of 17

    ExampleDifference
    62 − 1745
    64 − 1747
    69 − 1752
    71 − 1754
    75 − 1758
    80 − 1763
    82 − 1765
    84 − 1767
    86 − 1769
    88 − 1771
    91 − 1774
    93 − 1776
    95 − 1778
    100 − 1783
    102 − 1785
    106 − 1789
    109 − 1792
    111 − 1794
    115 − 1798
    122 − 17105
    Recalculate with different values ↑

    FAQ

    What is 91 − 17?

    91 − 17 = 74

    How do you check that 91 − 17 = 74?

    Add the difference and the subtrahend: 74 + 17 = 91. Getting the minuend back means the difference is right.

    How many times do you borrow in 91 − 17?

    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