Addition with Regrouping: 85 + 54

Addition with Regrouping Calculator
First addend
Second addend

What is 85 + 54?

Answer

85 + 54 =
139

The sum is longer than the addends: 1 carry — into the hundreds; the last one makes a new digit

85 + 54 in a column. Carries are the small circled digits above the columns.
1carry
8 5
+54
139

Column by column: 85 + 54

  • Ones: 5 + 4 = 9 — write 9.
  • Tens: 8 + 5 = 13 — write 3, carry 1.
  • Hundreds: the carried 1 — write 1.

85 + 54 = 139

Second check: 139 − 85 = 54

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FAQ

What is 85 + 54?

85 + 54 = 139

How do you check that 85 + 54 = 139?

Subtract one addend from the sum: 139 − 54 = 85, and 139 − 85 = 54. Getting the other addend back means the sum is right.

How many carries are there in 85 + 54?

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.

Is 54 + 85 the same as 85 + 54?

Yes. Addition is commutative, so both give 139; the column looks the same with either number on top.