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    Addition with Regrouping: 172 + 45

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 172 + 45?

    Answer

    172 + 45 =
    217

    With regrouping: 1 carry — into the hundreds

    172 + 45 in a column. Carries are the small circled digits above the columns.
    1carry
    1 7 2
    +45
    217

    Column by column: 172 + 45

    • Ones: 2 + 5 = 7 — write 7.
    • Tens: 7 + 4 = 11 — write 1, carry 1.
    • Hundreds: 1 + 1 = 2 — write 2.

    172 + 45 = 217

    Second check: 217 − 172 = 45

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    172 + 45 = 217 - Addition with Regrouping. 172 + 45 = 217. Addition with regrouping step by step: 1 carry, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/172--45/generated.jpgCopy

    Column additions with 45

    ExampleSum
    76 + 45121
    78 + 45123
    83 + 45128
    85 + 45130
    89 + 45134
    92 + 45137
    94 + 45139
    98 + 45143
    105 + 45150
    136 + 45181
    172 + 45217
    203 + 45248
    239 + 45284
    268 + 45313
    307 + 45352
    348 + 45393
    376 + 45421
    402 + 45447
    453 + 45498
    485 + 45530
    Recalculate with different values ↑

    FAQ

    What is 172 + 45?

    172 + 45 = 217

    How do you check that 172 + 45 = 217?

    Subtract one addend from the sum: 217 − 45 = 172, and 217 − 172 = 45. Getting the other addend back means the sum is right.

    How many carries are there in 172 + 45?

    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 45 + 172 the same as 172 + 45?

    Yes. Addition is commutative, so both give 217; the column looks the same with either number on top.

    See Also