Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    Addition with Regrouping: 28 + 23

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 28 + 23?

    Answer

    28 + 23 =
    51

    With regrouping: 1 carry — into the tens

    28 + 23 in a column. Carries are the small circled digits above the columns.
    1carry
    2 8
    +23
    51

    Column by column: 28 + 23

    • Ones: 8 + 3 = 11 — write 1, carry 1.
    • Tens: 2 + 2 + 1 = 5 — write 5.

    28 + 23 = 51

    Second check: 51 − 28 = 23

    Similar examples to practise

    Related Calculations

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/long-addition/28--23Copy
    <a href="https://calculat.io/en/number/long-addition/28--23">28 + 23 = 51 - Addition with Regrouping - Calculatio</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    28 + 23 = 51 - Addition with Regrouping. 28 + 23 = 51. Addition with regrouping step by step: 1 carry, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/28--23/generated.jpgCopy

    Column additions with 23

    ExampleSum
    23 + 2346
    26 + 2349
    28 + 2351
    34 + 2357
    36 + 2359
    39 + 2362
    41 + 2364
    45 + 2368
    47 + 2370
    52 + 2375
    54 + 2377
    58 + 2381
    63 + 2386
    65 + 2388
    67 + 2390
    69 + 2392
    71 + 2394
    74 + 2397
    76 + 2399
    77 + 23100
    Recalculate with different values ↑

    FAQ

    What is 28 + 23?

    28 + 23 = 51

    How do you check that 28 + 23 = 51?

    Subtract one addend from the sum: 51 − 23 = 28, and 51 − 28 = 23. Getting the other addend back means the sum is right.

    How many carries are there in 28 + 23?

    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 23 + 28 the same as 28 + 23?

    Yes. Addition is commutative, so both give 51; the column looks the same with either number on top.

    See Also