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    Column Addition: 71 + 15

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 71 + 15?

    Answer

    71 + 15 =
    86

    No regrouping: each column is added on its own

    71 + 15 in a column. No carries.
    7 1
    +15
    86

    Column by column: 71 + 15

    • Ones: 1 + 5 = 6 — write 6.
    • Tens: 7 + 1 = 8 — write 8.

    71 + 15 = 86

    Second check: 86 − 71 = 15

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    <a href="https://calculat.io/en/number/long-addition/71--15">71 + 15 = 86 - Column Addition - Calculatio</a>Copy
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    71 + 15 = 86 - Column Addition. 71 + 15 = 86. Column addition step by step: no carrying, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/71--15/generated.jpgCopy

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    Recalculate with different values ↑

    FAQ

    What is 71 + 15?

    71 + 15 = 86

    How do you check that 71 + 15 = 86?

    Subtract one addend from the sum: 86 − 15 = 71, and 86 − 71 = 15. Getting the other addend back means the sum is right.

    How many carries are there in 71 + 15?

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

    Is 15 + 71 the same as 71 + 15?

    Yes. Addition is commutative, so both give 86; the column looks the same with either number on top.

    See Also