Addition with Regrouping: 307 + 93

Addition with Regrouping Calculator
First addend
Second addend

What is 307 + 93?

Answer

307 + 93 =
400

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

307 + 93 in a column. Carries are the small circled digits above the columns.
1carry1carry
3 0 7
+93
400

Column by column: 307 + 93

  • Ones: 7 + 3 = 10 — write 0, carry 1.
  • Tens: 0 + 9 + 1 = 10 — write 0, carry 1.
  • Hundreds: 3 + 1 = 4 — write 4.

307 + 93 = 400

Second check: 400 − 307 = 93

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FAQ

What is 307 + 93?

307 + 93 = 400

How do you check that 307 + 93 = 400?

Subtract one addend from the sum: 400 − 93 = 307, and 400 − 307 = 93. Getting the other addend back means the sum is right.

How many carries are there in 307 + 93?

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 93 + 307 the same as 307 + 93?

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