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    Addition with Regrouping: 578 + 422

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 578 + 422?

    Answer

    578 + 422 =
    1,000

    The sum is longer than the addends: 3 carries — into the tens, the hundreds and the thousands; the last one makes a new digit

    578 + 422 in a column. Carries are the small circled digits above the columns.
    1carry1carry1carry
    5 7 8
    +422
    1000

    Column by column: 578 + 422

    • Ones: 8 + 2 = 10 — write 0, carry 1.
    • Tens: 7 + 2 + 1 = 10 — write 0, carry 1.
    • Hundreds: 5 + 4 + 1 = 10 — write 0, carry 1.
    • Thousands: the carried 1 — write 1.

    578 + 422 = 1,000

    Second check: 1,000 − 578 = 422

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    578 + 422 = 1,000 - Addition with Regrouping. 578 + 422 = 1,000. Addition with regrouping step by step: 3 carries, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/578--422/generated.jpgCopy

    Column additions with 578

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    578 + 256834
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    578 + 4221,000
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    Recalculate with different values ↑

    FAQ

    What is 578 + 422?

    578 + 422 = 1,000

    How do you check that 578 + 422 = 1,000?

    Subtract one addend from the sum: 1,000 − 422 = 578, and 1,000 − 578 = 422. Getting the other addend back means the sum is right.

    How many carries are there in 578 + 422?

    3 carries: 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 422 + 578 the same as 578 + 422?

    Yes. Addition is commutative, so both give 1,000; the column looks the same with either number on top.

    See Also