Addition with Regrouping: 23,456 + 3,579

Addition with Regrouping Calculator
First addend
Second addend

What is 23,456 + 3,579?

Answer

23,456 + 3,579 =
27,035

With regrouping: 3 carries — into the tens, the hundreds and the thousands

23,456 + 3,579 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
2 3 4 5 6
+3579
27035

Column by column: 23,456 + 3,579

  • Ones: 6 + 9 = 15 — write 5, carry 1.
  • Tens: 5 + 7 + 1 = 13 — write 3, carry 1.
  • Hundreds: 4 + 5 + 1 = 10 — write 0, carry 1.
  • Thousands: 3 + 3 + 1 = 7 — write 7.
  • Ten thousands: nothing to add — write 2.

23,456 + 3,579 = 27,035

Second check: 27,035 − 23,456 = 3,579

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Column additions with 3,579

ExampleSum
23,451 + 3,57927,030
23,452 + 3,57927,031
23,453 + 3,57927,032
23,454 + 3,57927,033
23,455 + 3,57927,034
23,456 + 3,57927,035
23,457 + 3,57927,036
23,458 + 3,57927,037
23,459 + 3,57927,038
23,460 + 3,57927,039
23,461 + 3,57927,040

FAQ

What is 23,456 + 3,579?

23,456 + 3,579 = 27,035

How do you check that 23,456 + 3,579 = 27,035?

Subtract one addend from the sum: 27,035 − 3,579 = 23,456, and 27,035 − 23,456 = 3,579. Getting the other addend back means the sum is right.

How many carries are there in 23,456 + 3,579?

3 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 3,579 + 23,456 the same as 23,456 + 3,579?

Yes. Addition is commutative, so both give 27,035; the column looks the same with either number on top.

See Also