Addition with Regrouping: 647 + 647

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First addend
Second addend

What is 647 + 647?

Answer

647 + 647 =
1,294

The sum is longer than the addends: 2 carries — into the tens and the thousands; the last one makes a new digit

647 + 647 in a column. Carries are the small circled digits above the columns.
1carry1carry
6 4 7
+647
1294

Column by column: 647 + 647

  • Ones: 7 + 7 = 14 — write 4, carry 1.
  • Tens: 4 + 4 + 1 = 9 — write 9.
  • Hundreds: 6 + 6 = 12 — write 2, carry 1.
  • Thousands: the carried 1 — write 1.

647 + 647 = 1,294

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FAQ

What is 647 + 647?

647 + 647 = 1,294

How do you check that 647 + 647 = 1,294?

Subtract one addend from the sum: 1,294 − 647 = 647. Getting the other addend back means the sum is right.

How many carries are there in 647 + 647?

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.