Addition with Regrouping: 485 + 105

Addition with Regrouping Calculator
First addend
Second addend

What is 485 + 105?

Answer

485 + 105 =
590

With regrouping: 1 carry — into the tens

485 + 105 in a column. Carries are the small circled digits above the columns.
1carry
4 8 5
+105
590

Column by column: 485 + 105

  • Ones: 5 + 5 = 10 — write 0, carry 1.
  • Tens: 8 + 0 + 1 = 9 — write 9.
  • Hundreds: 4 + 1 = 5 — write 5.

485 + 105 = 590

Second check: 590 − 485 = 105

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FAQ

What is 485 + 105?

485 + 105 = 590

How do you check that 485 + 105 = 590?

Subtract one addend from the sum: 590 − 105 = 485, and 590 − 485 = 105. Getting the other addend back means the sum is right.

How many carries are there in 485 + 105?

1 carry: 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 105 + 485 the same as 485 + 105?

Yes. Addition is commutative, so both give 590; the column looks the same with either number on top.