Addition with Regrouping: 342 + 58

Addition with Regrouping Calculator
First addend
Second addend

What is 342 + 58?

Answer

342 + 58 =
400

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

342 + 58 in a column. Carries are the small circled digits above the columns.
1carry1carry
3 4 2
+58
400

Column by column: 342 + 58

  • Ones: 2 + 8 = 10 — write 0, carry 1.
  • Tens: 4 + 5 + 1 = 10 — write 0, carry 1.
  • Hundreds: 3 + 1 = 4 — write 4.

342 + 58 = 400

Second check: 400 − 342 = 58

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FAQ

What is 342 + 58?

342 + 58 = 400

How do you check that 342 + 58 = 400?

Subtract one addend from the sum: 400 − 58 = 342, and 400 − 342 = 58. Getting the other addend back means the sum is right.

How many carries are there in 342 + 58?

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 58 + 342 the same as 342 + 58?

Yes. Addition is commutative, so both give 400; the column looks the same with either number on top.

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