Addition with Regrouping: 405,067 + 12,345

Addition with Regrouping Calculator
First addend
Second addend

What is 405,067 + 12,345?

Answer

405,067 + 12,345 =
417,412

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

405,067 + 12,345 in a column. Carries are the small circled digits above the columns.
1carry1carry
4 0 5 0 6 7
+12345
417412

Column by column: 405,067 + 12,345

  • Ones: 7 + 5 = 12 — write 2, carry 1.
  • Tens: 6 + 4 + 1 = 11 — write 1, carry 1.
  • Hundreds: 0 + 3 + 1 = 4 — write 4.
  • Thousands: 5 + 2 = 7 — write 7.
  • Ten thousands: 0 + 1 = 1 — write 1.
  • Hundred thousands: nothing to add — write 4.

405,067 + 12,345 = 417,412

Second check: 417,412 − 405,067 = 12,345

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Column additions with 12,345

ExampleSum
405,062 + 12,345417,407
405,063 + 12,345417,408
405,064 + 12,345417,409
405,065 + 12,345417,410
405,066 + 12,345417,411
405,067 + 12,345417,412
405,068 + 12,345417,413
405,069 + 12,345417,414
405,070 + 12,345417,415
405,071 + 12,345417,416
405,072 + 12,345417,417

FAQ

What is 405,067 + 12,345?

405,067 + 12,345 = 417,412

How do you check that 405,067 + 12,345 = 417,412?

Subtract one addend from the sum: 417,412 − 12,345 = 405,067, and 417,412 − 405,067 = 12,345. Getting the other addend back means the sum is right.

How many carries are there in 405,067 + 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 + 405,067 the same as 405,067 + 12,345?

Yes. Addition is commutative, so both give 417,412; the column looks the same with either number on top.

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