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    Addition with Regrouping: 172 + 28

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 172 + 28?

    Answer

    172 + 28 =
    200

    With regrouping: 2 carries — into the tens and the hundreds

    172 + 28 in a column. Carries are the small circled digits above the columns.
    1carry1carry
    1 7 2
    +28
    200

    Column by column: 172 + 28

    • Ones: 2 + 8 = 10 — write 0, carry 1.
    • Tens: 7 + 2 + 1 = 10 — write 0, carry 1.
    • Hundreds: 1 + 1 = 2 — write 2.

    172 + 28 = 200

    Second check: 200 − 172 = 28

    Similar examples to practise

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    172 + 28 = 200 - Addition with Regrouping. 172 + 28 = 200. Addition with regrouping step by step: 2 carries, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/172--28/generated.jpgCopy

    Column additions with 28

    ExampleSum
    76 + 28104
    78 + 28106
    83 + 28111
    85 + 28113
    89 + 28117
    92 + 28120
    94 + 28122
    98 + 28126
    105 + 28133
    136 + 28164
    172 + 28200
    203 + 28231
    239 + 28267
    268 + 28296
    272 + 28300
    307 + 28335
    348 + 28376
    372 + 28400
    376 + 28404
    402 + 28430
    Recalculate with different values ↑

    FAQ

    What is 172 + 28?

    172 + 28 = 200

    How do you check that 172 + 28 = 200?

    Subtract one addend from the sum: 200 − 28 = 172, and 200 − 172 = 28. Getting the other addend back means the sum is right.

    How many carries are there in 172 + 28?

    2 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 28 + 172 the same as 172 + 28?

    Yes. Addition is commutative, so both give 200; the column looks the same with either number on top.

    See Also