Addition with Regrouping: 65 + 45

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First addend
Second addend

What is 65 + 45?

Answer

65 + 45 =
110

The sum is longer than the addends: 2 carries — into the tens and the hundreds; the last one makes a new digit

65 + 45 in a column. Carries are the small circled digits above the columns.
1carry1carry
6 5
+45
110

Column by column: 65 + 45

  • Ones: 5 + 5 = 10 — write 0, carry 1.
  • Tens: 6 + 4 + 1 = 11 — write 1, carry 1.
  • Hundreds: the carried 1 — write 1.

65 + 45 = 110

Second check: 110 − 65 = 45

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FAQ

What is 65 + 45?

65 + 45 = 110

How do you check that 65 + 45 = 110?

Subtract one addend from the sum: 110 − 45 = 65, and 110 − 65 = 45. Getting the other addend back means the sum is right.

How many carries are there in 65 + 45?

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 45 + 65 the same as 65 + 45?

Yes. Addition is commutative, so both give 110; the column looks the same with either number on top.