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    Column Addition: 23 + 15

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 23 + 15?

    Answer

    23 + 15 =
    38

    No regrouping: each column is added on its own

    23 + 15 in a column. No carries.
    2 3
    +15
    38

    Column by column: 23 + 15

    • Ones: 3 + 5 = 8 — write 8.
    • Tens: 2 + 1 = 3 — write 3.

    23 + 15 = 38

    Second check: 38 − 23 = 15

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    https://calculat.io/en/number/long-addition/23--15Copy
    <a href="https://calculat.io/en/number/long-addition/23--15">23 + 15 = 38 - Column Addition - Calculatio</a>Copy
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    23 + 15 = 38 - Column Addition. 23 + 15 = 38. Column addition step by step: no carrying, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/23--15/generated.jpgCopy

    Column additions with 15

    ExampleSum
    15 + 1530
    17 + 1532
    19 + 1534
    23 + 1538
    26 + 1541
    28 + 1543
    34 + 1549
    36 + 1551
    39 + 1554
    41 + 1556
    45 + 1560
    47 + 1562
    52 + 1567
    54 + 1569
    58 + 1573
    63 + 1578
    65 + 1580
    67 + 1582
    69 + 1584
    71 + 1586
    Recalculate with different values ↑

    FAQ

    What is 23 + 15?

    23 + 15 = 38

    How do you check that 23 + 15 = 38?

    Subtract one addend from the sum: 38 − 15 = 23, and 38 − 23 = 15. Getting the other addend back means the sum is right.

    How many carries are there in 23 + 15?

    None: no column adds up to 10 or more, so every digit of the sum is written straight away.

    Is 15 + 23 the same as 23 + 15?

    Yes. Addition is commutative, so both give 38; the column looks the same with either number on top.

    See Also