Addition with Regrouping: 229 + 71

Addition with Regrouping Calculator
First addend
Second addend

What is 229 + 71?

Answer

229 + 71 =
300

With regrouping: 2 carries — into the tens and the hundreds

229 + 71 in a column. Carries are the small circled digits above the columns.
1carry1carry
2 2 9
+71
300

Column by column: 229 + 71

  • Ones: 9 + 1 = 10 — write 0, carry 1.
  • Tens: 2 + 7 + 1 = 10 — write 0, carry 1.
  • Hundreds: 2 + 1 = 3 — write 3.

229 + 71 = 300

Second check: 300 − 229 = 71

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FAQ

What is 229 + 71?

229 + 71 = 300

How do you check that 229 + 71 = 300?

Subtract one addend from the sum: 300 − 71 = 229, and 300 − 229 = 71. Getting the other addend back means the sum is right.

How many carries are there in 229 + 71?

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 71 + 229 the same as 229 + 71?

Yes. Addition is commutative, so both give 300; the column looks the same with either number on top.

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