Addition with Regrouping: 578 + 519

Addition with Regrouping Calculator
First addend
Second addend

What is 578 + 519?

Answer

578 + 519 =
1,097

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

578 + 519 in a column. Carries are the small circled digits above the columns.
1carry1carry
5 7 8
+519
1097

Column by column: 578 + 519

  • Ones: 8 + 9 = 17 — write 7, carry 1.
  • Tens: 7 + 1 + 1 = 9 — write 9.
  • Hundreds: 5 + 5 = 10 — write 0, carry 1.
  • Thousands: the carried 1 — write 1.

578 + 519 = 1,097

Second check: 1,097 − 578 = 519

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FAQ

What is 578 + 519?

578 + 519 = 1,097

How do you check that 578 + 519 = 1,097?

Subtract one addend from the sum: 1,097 − 519 = 578, and 1,097 − 578 = 519. Getting the other addend back means the sum is right.

How many carries are there in 578 + 519?

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 519 + 578 the same as 578 + 519?

Yes. Addition is commutative, so both give 1,097; the column looks the same with either number on top.

See Also