Addition with Regrouping: 89 + 83

Addition with Regrouping Calculator
First addend
Second addend

What is 89 + 83?

Answer

89 + 83 =
172

The sum is longer than the addends: 2 carries — into the tens and the hundreds; the last one makes a new digit

89 + 83 in a column. Carries are the small circled digits above the columns.
1carry1carry
8 9
+83
172

Column by column: 89 + 83

  • Ones: 9 + 3 = 12 — write 2, carry 1.
  • Tens: 8 + 8 + 1 = 17 — write 7, carry 1.
  • Hundreds: the carried 1 — write 1.

89 + 83 = 172

Second check: 172 − 89 = 83

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FAQ

What is 89 + 83?

89 + 83 = 172

How do you check that 89 + 83 = 172?

Subtract one addend from the sum: 172 − 83 = 89, and 172 − 89 = 83. Getting the other addend back means the sum is right.

How many carries are there in 89 + 83?

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 83 + 89 the same as 89 + 83?

Yes. Addition is commutative, so both give 172; the column looks the same with either number on top.