Addition with Regrouping: 361 + 39

Addition with Regrouping Calculator
First addend
Second addend

What is 361 + 39?

Answer

361 + 39 =
400

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

361 + 39 in a column. Carries are the small circled digits above the columns.
1carry1carry
3 6 1
+39
400

Column by column: 361 + 39

  • Ones: 1 + 9 = 10 — write 0, carry 1.
  • Tens: 6 + 3 + 1 = 10 — write 0, carry 1.
  • Hundreds: 3 + 1 = 4 — write 4.

361 + 39 = 400

Second check: 400 − 361 = 39

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FAQ

What is 361 + 39?

361 + 39 = 400

How do you check that 361 + 39 = 400?

Subtract one addend from the sum: 400 − 39 = 361, and 400 − 361 = 39. Getting the other addend back means the sum is right.

How many carries are there in 361 + 39?

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 39 + 361 the same as 361 + 39?

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

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