Addition with Regrouping: 578 + 389

Addition with Regrouping Calculator
First addend
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What is 578 + 389?

Answer

578 + 389 =
967

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

578 + 389 in a column. Carries are the small circled digits above the columns.
1carry1carry
5 7 8
+389
967

Column by column: 578 + 389

  • Ones: 8 + 9 = 17 — write 7, carry 1.
  • Tens: 7 + 8 + 1 = 16 — write 6, carry 1.
  • Hundreds: 5 + 3 + 1 = 9 — write 9.

578 + 389 = 967

Second check: 967 − 578 = 389

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FAQ

What is 578 + 389?

578 + 389 = 967

How do you check that 578 + 389 = 967?

Subtract one addend from the sum: 967 − 389 = 578, and 967 − 578 = 389. Getting the other addend back means the sum is right.

How many carries are there in 578 + 389?

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 389 + 578 the same as 578 + 389?

Yes. Addition is commutative, so both give 967; the column looks the same with either number on top.

See Also