Addition with Regrouping: 83 + 71

Addition with Regrouping Calculator
First addend
Second addend

What is 83 + 71?

Answer

83 + 71 =
154

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

83 + 71 in a column. Carries are the small circled digits above the columns.
1carry
8 3
+71
154

Column by column: 83 + 71

  • Ones: 3 + 1 = 4 — write 4.
  • Tens: 8 + 7 = 15 — write 5, carry 1.
  • Hundreds: the carried 1 — write 1.

83 + 71 = 154

Second check: 154 − 83 = 71

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FAQ

What is 83 + 71?

83 + 71 = 154

How do you check that 83 + 71 = 154?

Subtract one addend from the sum: 154 − 71 = 83, and 154 − 83 = 71. Getting the other addend back means the sum is right.

How many carries are there in 83 + 71?

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 71 + 83 the same as 83 + 71?

Yes. Addition is commutative, so both give 154; the column looks the same with either number on top.