Column Addition: 71 + 17

Addition with Regrouping Calculator
First addend
Second addend

What is 71 + 17?

Answer

71 + 17 =
88

No regrouping: each column is added on its own

71 + 17 in a column. No carries.
7 1
+17
88

Column by column: 71 + 17

  • Ones: 1 + 7 = 8 — write 8.
  • Tens: 7 + 1 = 8 — write 8.

71 + 17 = 88

Second check: 88 − 71 = 17

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FAQ

What is 71 + 17?

71 + 17 = 88

How do you check that 71 + 17 = 88?

Subtract one addend from the sum: 88 − 17 = 71, and 88 − 71 = 17. Getting the other addend back means the sum is right.

How many carries are there in 71 + 17?

None: no column adds up to 10 or more, so every digit of the sum is written straight away.

Is 17 + 71 the same as 71 + 17?

Yes. Addition is commutative, so both give 88; the column looks the same with either number on top.