Addition with Regrouping: 45,089 + 12,345

Addition with Regrouping Calculator
First addend
Second addend

What is 45,089 + 12,345?

Answer

45,089 + 12,345 =
57,434

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

45,089 + 12,345 in a column. Carries are the small circled digits above the columns.
1carry1carry
4 5 0 8 9
+12345
57434

Column by column: 45,089 + 12,345

  • Ones: 9 + 5 = 14 — write 4, carry 1.
  • Tens: 8 + 4 + 1 = 13 — write 3, carry 1.
  • Hundreds: 0 + 3 + 1 = 4 — write 4.
  • Thousands: 5 + 2 = 7 — write 7.
  • Ten thousands: 4 + 1 = 5 — write 5.

45,089 + 12,345 = 57,434

Second check: 57,434 − 45,089 = 12,345

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45,089 + 12,34557,434
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FAQ

What is 45,089 + 12,345?

45,089 + 12,345 = 57,434

How do you check that 45,089 + 12,345 = 57,434?

Subtract one addend from the sum: 57,434 − 12,345 = 45,089, and 57,434 − 45,089 = 12,345. Getting the other addend back means the sum is right.

How many carries are there in 45,089 + 12,345?

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 12,345 + 45,089 the same as 45,089 + 12,345?

Yes. Addition is commutative, so both give 57,434; the column looks the same with either number on top.

See Also