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    Subtraction with Regrouping: 991 − 427

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 991 − 427?

    Answer

    991 − 427 =
    564

    With regrouping: 1 borrow — from the tens

    991 − 427 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 9(was 9, now 8)1 (was 1, now 11)
    −427
    564

    Column by column: 991 − 427

    • Ones: 1 is less than 7 — borrow 1 ten: tens 9 → 8; 11 − 7 = 4 — write 4.
    • Tens: after borrowing, 8; 8 − 2 = 6 — write 6.
    • Hundreds: 9 − 4 = 5 — write 5.

    991 − 427 = 564

    Second check: 991 − 564 = 427

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    991 − 427 = 564 - Subtraction with Regrouping. 991 − 427 = 564. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/991--427/generated.jpgCopy

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    Recalculate with different values ↑

    FAQ

    What is 991 − 427?

    991 − 427 = 564

    How do you check that 991 − 427 = 564?

    Add the difference and the subtrahend: 564 + 427 = 991. Getting the minuend back means the difference is right.

    How many times do you borrow in 991 − 427?

    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