Addition with Regrouping: 239 + 239

Addition with Regrouping Calculator
First addend
Second addend

What is 239 + 239?

Answer

239 + 239 =
478

With regrouping: 1 carry — into the tens

239 + 239 in a column. Carries are the small circled digits above the columns.
1carry
2 3 9
+239
478

Column by column: 239 + 239

  • Ones: 9 + 9 = 18 — write 8, carry 1.
  • Tens: 3 + 3 + 1 = 7 — write 7.
  • Hundreds: 2 + 2 = 4 — write 4.

239 + 239 = 478

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FAQ

What is 239 + 239?

239 + 239 = 478

How do you check that 239 + 239 = 478?

Subtract one addend from the sum: 478 − 239 = 239. Getting the other addend back means the sum is right.

How many carries are there in 239 + 239?

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.