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    Subtraction with Regrouping: 402 − 54

    Subtraction with Regrouping Calculator
    Minuend
    Subtrahend

    What is 402 − 54?

    Answer

    402 − 54 =
    348

    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

    402 − 54 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.
    39+10
    4(was 4, now 3)0(was 0, now 9)2 (was 2, now 12)
    −54
    348

    Column by column: 402 − 54

    • Ones: 2 is less than 4 — borrow 1 hundred across the zero: hundreds 4 → 3, tens 0 → 9; 12 − 4 = 8 — write 8.
    • Tens: after borrowing, 9; 9 − 5 = 4 — write 4.
    • Hundreds: after borrowing, 3; nothing to subtract — write 3.

    402 − 54 = 348

    Second check: 402 − 348 = 54

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    402 − 54 = 348 - Subtraction with Regrouping. 402 − 54 = 348. 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/402--54/generated.jpgCopy

    Column subtractions of 54

    ExampleDifference
    146 − 5492
    148 − 5494
    152 − 5498
    159 − 54105
    190 − 54136
    200 − 54146
    226 − 54172
    257 − 54203
    293 − 54239
    300 − 54246
    322 − 54268
    361 − 54307
    402 − 54348
    430 − 54376
    456 − 54402
    507 − 54453
    539 − 54485
    590 − 54536
    632 − 54578
    701 − 54647
    Recalculate with different values ↑

    FAQ

    What is 402 − 54?

    402 − 54 = 348

    How do you check that 402 − 54 = 348?

    Add the difference and the subtrahend: 348 + 54 = 402. Getting the minuend back means the difference is right.

    How many times do you borrow in 402 − 54?

    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 402 − 54?

    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