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    Subtraction with Regrouping: 64 − 17

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 64 − 17?

    Answer

    64 − 17 =
    47

    With regrouping: 1 borrow — from the tens

    64 − 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.
    5+10
    6(was 6, now 5)4 (was 4, now 14)
    −17
    47

    Column by column: 64 − 17

    • Ones: 4 is less than 7 — borrow 1 ten: tens 6 → 5; 14 − 7 = 7 — write 7.
    • Tens: after borrowing, 5; 5 − 1 = 4 — write 4.

    64 − 17 = 47

    Second check: 64 − 47 = 17

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    64 − 17 = 47 - Subtraction with Regrouping. 64 − 17 = 47. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/64--17/generated.jpgCopy

    Column subtractions of 17

    ExampleDifference
    34 − 1717
    36 − 1719
    40 − 1723
    43 − 1726
    45 − 1728
    51 − 1734
    53 − 1736
    56 − 1739
    58 − 1741
    62 − 1745
    64 − 1747
    69 − 1752
    71 − 1754
    75 − 1758
    80 − 1763
    82 − 1765
    84 − 1767
    86 − 1769
    88 − 1771
    91 − 1774
    Recalculate with different values ↑

    FAQ

    What is 64 − 17?

    64 − 17 = 47

    How do you check that 64 − 17 = 47?

    Add the difference and the subtrahend: 47 + 17 = 64. Getting the minuend back means the difference is right.

    How many times do you borrow in 64 − 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