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    Subtraction with Regrouping: 900 − 322

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 900 − 322?

    Answer

    900 − 322 =
    578

    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

    900 − 322 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.
    89+10
    9(was 9, now 8)0(was 0, now 9)0 (was 0, now 10)
    −322
    578

    Column by column: 900 − 322

    • Ones: 0 is less than 2 — borrow 1 hundred across the zero: hundreds 9 → 8, tens 0 → 9; 10 − 2 = 8 — write 8.
    • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
    • Hundreds: after borrowing, 8; 8 − 3 = 5 — write 5.

    900 − 322 = 578

    Second check: 900 − 578 = 322

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    900 − 322 = 578 - Subtraction with Regrouping. 900 − 322 = 578. 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/900--322/generated.jpgCopy

    Column subtractions from 900

    ExampleDifference
    900 − 12888
    900 − 23877
    900 − 36864
    900 − 47853
    900 − 63837
    900 − 71829
    900 − 83817
    900 − 94806
    900 − 136764
    900 − 203697
    900 − 268632
    900 − 322578
    900 − 348552
    900 − 402498
    900 − 415485
    Recalculate with different values ↑

    FAQ

    What is 900 − 322?

    900 − 322 = 578

    How do you check that 900 − 322 = 578?

    Add the difference and the subtrahend: 578 + 322 = 900. Getting the minuend back means the difference is right.

    How many times do you borrow in 900 − 322?

    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 900 − 322?

    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