Addition with Regrouping: 149 + 105

Addition with Regrouping Calculator
First addend
Second addend

What is 149 + 105?

Answer

149 + 105 =
254

With regrouping: 1 carry — into the tens

149 + 105 in a column. Carries are the small circled digits above the columns.
1carry
1 4 9
+105
254

Column by column: 149 + 105

  • Ones: 9 + 5 = 14 — write 4, carry 1.
  • Tens: 4 + 0 + 1 = 5 — write 5.
  • Hundreds: 1 + 1 = 2 — write 2.

149 + 105 = 254

Second check: 254 − 149 = 105

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FAQ

What is 149 + 105?

149 + 105 = 254

How do you check that 149 + 105 = 254?

Subtract one addend from the sum: 254 − 105 = 149, and 254 − 149 = 105. Getting the other addend back means the sum is right.

How many carries are there in 149 + 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 + 149 the same as 149 + 105?

Yes. Addition is commutative, so both give 254; the column looks the same with either number on top.