Addition with Regrouping: 1,515 + 485

Addition with Regrouping Calculator
First addend
Second addend

What is 1,515 + 485?

Answer

1,515 + 485 =
2,000

With regrouping: 3 carries — into the tens, the hundreds and the thousands

1,515 + 485 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
1 5 1 5
+485
2000

Column by column: 1,515 + 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: 1 + 1 = 2 — write 2.

1,515 + 485 = 2,000

Second check: 2,000 − 1,515 = 485

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FAQ

What is 1,515 + 485?

1,515 + 485 = 2,000

How do you check that 1,515 + 485 = 2,000?

Subtract one addend from the sum: 2,000 − 485 = 1,515, and 2,000 − 1,515 = 485. Getting the other addend back means the sum is right.

How many carries are there in 1,515 + 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 + 1,515 the same as 1,515 + 485?

Yes. Addition is commutative, so both give 2,000; the column looks the same with either number on top.

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