Addition with Regrouping: 28 + 28

Addition with Regrouping Calculator
First addend
Second addend

What is 28 + 28?

Answer

28 + 28 =
56

With regrouping: 1 carry — into the tens

28 + 28 in a column. Carries are the small circled digits above the columns.
1carry
2 8
+28
56

Column by column: 28 + 28

  • Ones: 8 + 8 = 16 — write 6, carry 1.
  • Tens: 2 + 2 + 1 = 5 — write 5.

28 + 28 = 56

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FAQ

What is 28 + 28?

28 + 28 = 56

How do you check that 28 + 28 = 56?

Subtract one addend from the sum: 56 − 28 = 28. Getting the other addend back means the sum is right.

How many carries are there in 28 + 28?

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.