Addition with Regrouping: 427 + 427

Addition with Regrouping Calculator
First addend
Second addend

What is 427 + 427?

Answer

427 + 427 =
854

With regrouping: 1 carry — into the tens

427 + 427 in a column. Carries are the small circled digits above the columns.
1carry
4 2 7
+427
854

Column by column: 427 + 427

  • Ones: 7 + 7 = 14 — write 4, carry 1.
  • Tens: 2 + 2 + 1 = 5 — write 5.
  • Hundreds: 4 + 4 = 8 — write 8.

427 + 427 = 854

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FAQ

What is 427 + 427?

427 + 427 = 854

How do you check that 427 + 427 = 854?

Subtract one addend from the sum: 854 − 427 = 427. Getting the other addend back means the sum is right.

How many carries are there in 427 + 427?

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.