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    Addition with Regrouping: 45 + 39

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 45 + 39?

    Answer

    45 + 39 =
    84

    With regrouping: 1 carry — into the tens

    45 + 39 in a column. Carries are the small circled digits above the columns.
    1carry
    4 5
    +39
    84

    Column by column: 45 + 39

    • Ones: 5 + 9 = 14 — write 4, carry 1.
    • Tens: 4 + 3 + 1 = 8 — write 8.

    45 + 39 = 84

    Second check: 84 − 45 = 39

    Similar examples to practise

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    <a href="https://calculat.io/en/number/long-addition/45--39">45 + 39 = 84 - Addition with Regrouping - Calculatio</a>Copy
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    45 + 39 = 84 - Addition with Regrouping. 45 + 39 = 84. Addition with regrouping step by step: 1 carry, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/45--39/generated.jpgCopy

    Column additions with 39

    ExampleSum
    39 + 3978
    41 + 3980
    45 + 3984
    47 + 3986
    52 + 3991
    54 + 3993
    58 + 3997
    63 + 39102
    65 + 39104
    67 + 39106
    69 + 39108
    71 + 39110
    74 + 39113
    76 + 39115
    78 + 39117
    83 + 39122
    85 + 39124
    89 + 39128
    92 + 39131
    94 + 39133
    Recalculate with different values ↑

    FAQ

    What is 45 + 39?

    45 + 39 = 84

    How do you check that 45 + 39 = 84?

    Subtract one addend from the sum: 84 − 39 = 45, and 84 − 45 = 39. Getting the other addend back means the sum is right.

    How many carries are there in 45 + 39?

    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 39 + 45 the same as 45 + 39?

    Yes. Addition is commutative, so both give 84; the column looks the same with either number on top.

    See Also