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    Column Addition: 45 + 23

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 45 + 23?

    Answer

    45 + 23 =
    68

    No regrouping: each column is added on its own

    45 + 23 in a column. No carries.
    4 5
    +23
    68

    Column by column: 45 + 23

    • Ones: 5 + 3 = 8 — write 8.
    • Tens: 4 + 2 = 6 — write 6.

    45 + 23 = 68

    Second check: 68 − 45 = 23

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    45 + 23 = 68 - Column Addition. 45 + 23 = 68. Column addition step by step: no carrying, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/45--23/generated.jpgCopy

    Column additions with 23

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    Recalculate with different values ↑

    FAQ

    What is 45 + 23?

    45 + 23 = 68

    How do you check that 45 + 23 = 68?

    Subtract one addend from the sum: 68 − 23 = 45, and 68 − 45 = 23. Getting the other addend back means the sum is right.

    How many carries are there in 45 + 23?

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

    Is 23 + 45 the same as 45 + 23?

    Yes. Addition is commutative, so both give 68; the column looks the same with either number on top.

    See Also