Addition with Regrouping: 402 + 239

Addition with Regrouping Calculator
First addend
Second addend

What is 402 + 239?

Answer

402 + 239 =
641

With regrouping: 1 carry — into the tens

402 + 239 in a column. Carries are the small circled digits above the columns.
1carry
4 0 2
+239
641

Column by column: 402 + 239

  • Ones: 2 + 9 = 11 — write 1, carry 1.
  • Tens: 0 + 3 + 1 = 4 — write 4.
  • Hundreds: 4 + 2 = 6 — write 6.

402 + 239 = 641

Second check: 641 − 402 = 239

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FAQ

What is 402 + 239?

402 + 239 = 641

How do you check that 402 + 239 = 641?

Subtract one addend from the sum: 641 − 239 = 402, and 641 − 402 = 239. Getting the other addend back means the sum is right.

How many carries are there in 402 + 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.

Is 239 + 402 the same as 402 + 239?

Yes. Addition is commutative, so both give 641; the column looks the same with either number on top.