Addition with Regrouping: 515 + 485

Addition with Regrouping Calculator
First addend
Second addend

What is 515 + 485?

Answer

515 + 485 =
1,000

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

515 + 485 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
5 1 5
+485
1000

Column by column: 515 + 485

  • Ones: 5 + 5 = 10 — write 0, carry 1.
  • Tens: 1 + 8 + 1 = 10 — write 0, carry 1.
  • Hundreds: 5 + 4 + 1 = 10 — write 0, carry 1.
  • Thousands: the carried 1 — write 1.

515 + 485 = 1,000

Second check: 1,000 − 515 = 485

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Column additions with 485

ExampleSum
510 + 485995
511 + 485996
512 + 485997
513 + 485998
514 + 485999
515 + 4851,000
516 + 4851,001
517 + 4851,002
518 + 4851,003
519 + 4851,004
520 + 4851,005

FAQ

What is 515 + 485?

515 + 485 = 1,000

How do you check that 515 + 485 = 1,000?

Subtract one addend from the sum: 1,000 − 485 = 515, and 1,000 − 515 = 485. Getting the other addend back means the sum is right.

How many carries are there in 515 + 485?

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 485 + 515 the same as 515 + 485?

Yes. Addition is commutative, so both give 1,000; the column looks the same with either number on top.

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