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    Subtraction with Regrouping: 670 − 23

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 670 − 23?

    Answer

    670 − 23 =
    647

    With regrouping: 1 borrow — from the tens

    670 − 23 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.
    6+10
    6 7(was 7, now 6)0 (was 0, now 10)
    −23
    647

    Column by column: 670 − 23

    • Ones: 0 is less than 3 — borrow 1 ten: tens 7 → 6; 10 − 3 = 7 — write 7.
    • Tens: after borrowing, 6; 6 − 2 = 4 — write 4.
    • Hundreds: nothing to subtract — write 6.

    670 − 23 = 647

    Second check: 670 − 647 = 23

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    670 − 23 = 647 - Subtraction with Regrouping. 670 − 23 = 647. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.
    https://calculat.io/en/number/long-subtraction/670--23/generated.jpgCopy

    Column subtractions of 23

    ExampleDifference
    226 − 23203
    262 − 23239
    291 − 23268
    300 − 23277
    330 − 23307
    371 − 23348
    399 − 23376
    425 − 23402
    476 − 23453
    508 − 23485
    559 − 23536
    601 − 23578
    670 − 23647
    700 − 23677
    800 − 23777
    900 − 23877
    1,000 − 23977
    2,000 − 231,977
    5,000 − 234,977
    10,000 − 239,977
    Recalculate with different values ↑

    FAQ

    What is 670 − 23?

    670 − 23 = 647

    How do you check that 670 − 23 = 647?

    Add the difference and the subtrahend: 647 + 23 = 670. Getting the minuend back means the difference is right.

    How many times do you borrow in 670 − 23?

    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