Addition with Regrouping: 256 + 256

Addition with Regrouping Calculator
First addend
Second addend

What is 256 + 256?

Answer

256 + 256 =
512

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

256 + 256 in a column. Carries are the small circled digits above the columns.
1carry1carry
2 5 6
+256
512

Column by column: 256 + 256

  • Ones: 6 + 6 = 12 — write 2, carry 1.
  • Tens: 5 + 5 + 1 = 11 — write 1, carry 1.
  • Hundreds: 2 + 2 + 1 = 5 — write 5.

256 + 256 = 512

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See Also

FAQ

What is 256 + 256?

256 + 256 = 512

How do you check that 256 + 256 = 512?

Subtract one addend from the sum: 512 − 256 = 256. Getting the other addend back means the sum is right.

How many carries are there in 256 + 256?

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.