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    Subtraction with Regrouping: 1,017 − 453

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 1,017 − 453?

    Answer

    1,017 − 453 =
    564

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

    1,017 − 453 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)1 (was 1, now 11)7
    −453
    564

    Column by column: 1,017 − 453

    • Ones: 7 − 3 = 4 — write 4.
    • Tens: 1 is less than 5 — borrow 1 thousand across the zero: thousands 1 → 0, hundreds 0 → 9; 11 − 5 = 6 — write 6.
    • Hundreds: after borrowing, 9; 9 − 4 = 5 — write 5.
    • Thousands: after borrowing, 0 — a leading zero is not written.

    1,017 − 453 = 564

    Second check: 1,017 − 564 = 453

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    1,017 − 453 = 564 - Subtraction with Regrouping. 1,017 − 453 = 564. 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/1017--453/generated.jpgCopy

    Column subtractions of 453

    ExampleDifference
    1,012 − 453559
    1,013 − 453560
    1,014 − 453561
    1,015 − 453562
    1,016 − 453563
    1,017 − 453564
    1,018 − 453565
    1,019 − 453566
    1,020 − 453567
    1,021 − 453568
    1,022 − 453569
    Recalculate with different values ↑

    FAQ

    What is 1,017 − 453?

    1,017 − 453 = 564

    How do you check that 1,017 − 453 = 564?

    Add the difference and the subtrahend: 564 + 453 = 1,017. Getting the minuend back means the difference is right.

    How many times do you borrow in 1,017 − 453?

    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 1,017 − 453?

    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