Addition with Regrouping: 381 + 19

Addition with Regrouping Calculator
First addend
Second addend

What is 381 + 19?

Answer

381 + 19 =
400

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

381 + 19 in a column. Carries are the small circled digits above the columns.
1carry1carry
3 8 1
+19
400

Column by column: 381 + 19

  • Ones: 1 + 9 = 10 — write 0, carry 1.
  • Tens: 8 + 1 + 1 = 10 — write 0, carry 1.
  • Hundreds: 3 + 1 = 4 — write 4.

381 + 19 = 400

Second check: 400 − 381 = 19

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FAQ

What is 381 + 19?

381 + 19 = 400

How do you check that 381 + 19 = 400?

Subtract one addend from the sum: 400 − 19 = 381, and 400 − 381 = 19. Getting the other addend back means the sum is right.

How many carries are there in 381 + 19?

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.

Is 19 + 381 the same as 381 + 19?

Yes. Addition is commutative, so both give 400; the column looks the same with either number on top.