Addition with Regrouping: 239 + 128

Addition with Regrouping Calculator
First addend
Second addend

What is 239 + 128?

Answer

239 + 128 =
367

With regrouping: 1 carry — into the tens

239 + 128 in a column. Carries are the small circled digits above the columns.
1carry
2 3 9
+128
367

Column by column: 239 + 128

  • Ones: 9 + 8 = 17 — write 7, carry 1.
  • Tens: 3 + 2 + 1 = 6 — write 6.
  • Hundreds: 2 + 1 = 3 — write 3.

239 + 128 = 367

Second check: 367 − 239 = 128

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FAQ

What is 239 + 128?

239 + 128 = 367

How do you check that 239 + 128 = 367?

Subtract one addend from the sum: 367 − 128 = 239, and 367 − 239 = 128. Getting the other addend back means the sum is right.

How many carries are there in 239 + 128?

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 128 + 239 the same as 239 + 128?

Yes. Addition is commutative, so both give 367; the column looks the same with either number on top.