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: 78 + 12

    Addition with Regrouping Calculator
    First addend
    Second addend

    What is 78 + 12?

    Answer

    78 + 12 =
    90

    With regrouping: 1 carry — into the tens

    78 + 12 in a column. Carries are the small circled digits above the columns.
    1carry
    7 8
    +12
    90

    Column by column: 78 + 12

    • Ones: 8 + 2 = 10 — write 0, carry 1.
    • Tens: 7 + 1 + 1 = 9 — write 9.

    78 + 12 = 90

    Second check: 90 − 78 = 12

    Similar examples to practise

    Related Calculations

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/long-addition/78--12Copy
    <a href="https://calculat.io/en/number/long-addition/78--12">78 + 12 = 90 - Addition with Regrouping - Calculatio</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    78 + 12 = 90 - Addition with Regrouping. 78 + 12 = 90. Addition with regrouping step by step: 1 carry, every digit of the sum and a subtraction check.
    https://calculat.io/en/number/long-addition/78--12/generated.jpgCopy

    Column additions with 12

    ExampleSum
    52 + 1264
    54 + 1266
    58 + 1270
    63 + 1275
    65 + 1277
    67 + 1279
    69 + 1281
    71 + 1283
    74 + 1286
    76 + 1288
    78 + 1290
    83 + 1295
    85 + 1297
    88 + 12100
    89 + 12101
    92 + 12104
    94 + 12106
    98 + 12110
    105 + 12117
    136 + 12148
    Recalculate with different values ↑

    FAQ

    What is 78 + 12?

    78 + 12 = 90

    How do you check that 78 + 12 = 90?

    Subtract one addend from the sum: 90 − 12 = 78, and 90 − 78 = 12. Getting the other addend back means the sum is right.

    How many carries are there in 78 + 12?

    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 12 + 78 the same as 78 + 12?

    Yes. Addition is commutative, so both give 90; the column looks the same with either number on top.

    See Also