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    Column Addition: 17 + 12

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 17 + 12?

    Answer

    17 + 12 =
    29

    No regrouping: each column is added on its own

    17 + 12 in a column. No carries.
    1 7
    +12
    29

    Column by column: 17 + 12

    • Ones: 7 + 2 = 9 — write 9.
    • Tens: 1 + 1 = 2 — write 2.

    17 + 12 = 29

    Second check: 29 − 17 = 12

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    <a href="https://calculat.io/en/number/long-addition/17--12">17 + 12 = 29 - Column Addition - Calculatio</a>Copy
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    17 + 12 = 29 - Column Addition. 17 + 12 = 29. Column addition step by step: no carrying, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/17--12/generated.jpgCopy

    Column additions with 12

    ExampleSum
    12 + 1224
    15 + 1227
    17 + 1229
    19 + 1231
    23 + 1235
    26 + 1238
    28 + 1240
    34 + 1246
    36 + 1248
    39 + 1251
    41 + 1253
    45 + 1257
    47 + 1259
    52 + 1264
    54 + 1266
    58 + 1270
    63 + 1275
    65 + 1277
    67 + 1279
    69 + 1281
    Recalculate with different values ↑

    FAQ

    What is 17 + 12?

    17 + 12 = 29

    How do you check that 17 + 12 = 29?

    Subtract one addend from the sum: 29 − 12 = 17, and 29 − 17 = 12. Getting the other addend back means the sum is right.

    How many carries are there in 17 + 12?

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

    Is 12 + 17 the same as 17 + 12?

    Yes. Addition is commutative, so both give 29; the column looks the same with either number on top.

    See Also