Addition with Regrouping: 578 + 12

Addition with Regrouping Calculator
First addend
Second addend

What is 578 + 12?

Answer

578 + 12 =
590

With regrouping: 1 carry — into the tens

578 + 12 in a column. Carries are the small circled digits above the columns.
1carry
5 7 8
+12
590

Column by column: 578 + 12

  • Ones: 8 + 2 = 10 — write 0, carry 1.
  • Tens: 7 + 1 + 1 = 9 — write 9.
  • Hundreds: nothing to add — write 5.

578 + 12 = 590

Second check: 590 − 578 = 12

Similar examples to practise

See Also

FAQ

What is 578 + 12?

578 + 12 = 590

How do you check that 578 + 12 = 590?

Subtract one addend from the sum: 590 − 12 = 578, and 590 − 578 = 12. Getting the other addend back means the sum is right.

How many carries are there in 578 + 12?

1 carry: 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 12 + 578 the same as 578 + 12?

Yes. Addition is commutative, so both give 590; the column looks the same with either number on top.