Addition with Regrouping: 39 + 23

Addition with Regrouping Calculator
First addend
Second addend

What is 39 + 23?

Answer

39 + 23 =
62

With regrouping: 1 carry — into the tens

39 + 23 in a column. Carries are the small circled digits above the columns.
1carry
3 9
+23
62

Column by column: 39 + 23

  • Ones: 9 + 3 = 12 — write 2, carry 1.
  • Tens: 3 + 2 + 1 = 6 — write 6.

39 + 23 = 62

Second check: 62 − 39 = 23

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FAQ

What is 39 + 23?

39 + 23 = 62

How do you check that 39 + 23 = 62?

Subtract one addend from the sum: 62 − 23 = 39, and 62 − 39 = 23. Getting the other addend back means the sum is right.

How many carries are there in 39 + 23?

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 23 + 39 the same as 39 + 23?

Yes. Addition is commutative, so both give 62; the column looks the same with either number on top.