Addition with Regrouping: 683 + 647

Addition with Regrouping Calculator
First addend
Second addend

What is 683 + 647?

Answer

683 + 647 =
1,330

The sum is longer than the addends: 3 carries — into the tens, the hundreds and the thousands; the last one makes a new digit

683 + 647 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
6 8 3
+647
1330

Column by column: 683 + 647

  • Ones: 3 + 7 = 10 — write 0, carry 1.
  • Tens: 8 + 4 + 1 = 13 — write 3, carry 1.
  • Hundreds: 6 + 6 + 1 = 13 — write 3, carry 1.
  • Thousands: the carried 1 — write 1.

683 + 647 = 1,330

Second check: 1,330 − 683 = 647

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FAQ

What is 683 + 647?

683 + 647 = 1,330

How do you check that 683 + 647 = 1,330?

Subtract one addend from the sum: 1,330 − 647 = 683, and 1,330 − 683 = 647. Getting the other addend back means the sum is right.

How many carries are there in 683 + 647?

3 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 647 + 683 the same as 683 + 647?

Yes. Addition is commutative, so both give 1,330; the column looks the same with either number on top.