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    Addition with Regrouping: 307 + 78

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 307 + 78?

    Answer

    307 + 78 =
    385

    With regrouping: 1 carry — into the tens

    307 + 78 in a column. Carries are the small circled digits above the columns.
    1carry
    3 0 7
    +78
    385

    Column by column: 307 + 78

    • Ones: 7 + 8 = 15 — write 5, carry 1.
    • Tens: 0 + 7 + 1 = 8 — write 8.
    • Hundreds: nothing to add — write 3.

    307 + 78 = 385

    Second check: 385 − 307 = 78

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    307 + 78 = 385 - Addition with Regrouping. 307 + 78 = 385. Addition with regrouping step by step: 1 carry, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/307--78/generated.jpgCopy

    Column additions with 78

    ExampleSum
    85 + 78163
    89 + 78167
    92 + 78170
    94 + 78172
    98 + 78176
    105 + 78183
    136 + 78214
    172 + 78250
    203 + 78281
    239 + 78317
    268 + 78346
    307 + 78385
    348 + 78426
    376 + 78454
    402 + 78480
    453 + 78531
    485 + 78563
    536 + 78614
    578 + 78656
    647 + 78725
    Recalculate with different values ↑

    FAQ

    What is 307 + 78?

    307 + 78 = 385

    How do you check that 307 + 78 = 385?

    Subtract one addend from the sum: 385 − 78 = 307, and 385 − 307 = 78. Getting the other addend back means the sum is right.

    How many carries are there in 307 + 78?

    1 carry: every time a column added up to 10 or more, its ones digit was written and 1 was carried to the next column on the left.

    Is 78 + 307 the same as 307 + 78?

    Yes. Addition is commutative, so both give 385; the column looks the same with either number on top.

    See Also