Addition with Regrouping: 105 + 105

Addition with Regrouping Calculator
First addend
Second addend

What is 105 + 105?

Answer

105 + 105 =
210

With regrouping: 1 carry — into the tens

105 + 105 in a column. Carries are the small circled digits above the columns.
1carry
1 0 5
+105
210

Column by column: 105 + 105

  • Ones: 5 + 5 = 10 — write 0, carry 1.
  • Tens: 0 + 0 + 1 = 1 — write 1.
  • Hundreds: 1 + 1 = 2 — write 2.

105 + 105 = 210

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FAQ

What is 105 + 105?

105 + 105 = 210

How do you check that 105 + 105 = 210?

Subtract one addend from the sum: 210 − 105 = 105. Getting the other addend back means the sum is right.

How many carries are there in 105 + 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.