Addition with Regrouping: 105 + 98

Addition with Regrouping Calculator
First addend
Second addend

What is 105 + 98?

Answer

105 + 98 =
203

With regrouping: 2 carries — into the tens and the hundreds

105 + 98 in a column. Carries are the small circled digits above the columns.
1carry1carry
1 0 5
+98
203

Column by column: 105 + 98

  • Ones: 5 + 8 = 13 — write 3, carry 1.
  • Tens: 0 + 9 + 1 = 10 — write 0, carry 1.
  • Hundreds: 1 + 1 = 2 — write 2.

105 + 98 = 203

Second check: 203 − 105 = 98

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FAQ

What is 105 + 98?

105 + 98 = 203

How do you check that 105 + 98 = 203?

Subtract one addend from the sum: 203 − 98 = 105, and 203 − 105 = 98. Getting the other addend back means the sum is right.

How many carries are there in 105 + 98?

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 98 + 105 the same as 105 + 98?

Yes. Addition is commutative, so both give 203; the column looks the same with either number on top.