Addition with Regrouping: 348 + 291

Addition with Regrouping Calculator
First addend
Second addend

What is 348 + 291?

Answer

348 + 291 =
639

With regrouping: 1 carry — into the hundreds

348 + 291 in a column. Carries are the small circled digits above the columns.
1carry
3 4 8
+291
639

Column by column: 348 + 291

  • Ones: 8 + 1 = 9 — write 9.
  • Tens: 4 + 9 = 13 — write 3, carry 1.
  • Hundreds: 3 + 2 + 1 = 6 — write 6.

348 + 291 = 639

Second check: 639 − 348 = 291

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FAQ

What is 348 + 291?

348 + 291 = 639

How do you check that 348 + 291 = 639?

Subtract one addend from the sum: 639 − 291 = 348, and 639 − 348 = 291. Getting the other addend back means the sum is right.

How many carries are there in 348 + 291?

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 291 + 348 the same as 348 + 291?

Yes. Addition is commutative, so both give 639; the column looks the same with either number on top.