Column Addition: 71 + 23

Addition with Regrouping Calculator
First addend
Second addend

What is 71 + 23?

Answer

71 + 23 =
94

No regrouping: each column is added on its own

71 + 23 in a column. No carries.
7 1
+23
94

Column by column: 71 + 23

  • Ones: 1 + 3 = 4 — write 4.
  • Tens: 7 + 2 = 9 — write 9.

71 + 23 = 94

Second check: 94 − 71 = 23

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FAQ

What is 71 + 23?

71 + 23 = 94

How do you check that 71 + 23 = 94?

Subtract one addend from the sum: 94 − 23 = 71, and 94 − 71 = 23. Getting the other addend back means the sum is right.

How many carries are there in 71 + 23?

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

Is 23 + 71 the same as 71 + 23?

Yes. Addition is commutative, so both give 94; the column looks the same with either number on top.