Addition with Regrouping: 578 + 268

Addition with Regrouping Calculator
First addend
Second addend

What is 578 + 268?

Answer

578 + 268 =
846

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

578 + 268 in a column. Carries are the small circled digits above the columns.
1carry1carry
5 7 8
+268
846

Column by column: 578 + 268

  • Ones: 8 + 8 = 16 — write 6, carry 1.
  • Tens: 7 + 6 + 1 = 14 — write 4, carry 1.
  • Hundreds: 5 + 2 + 1 = 8 — write 8.

578 + 268 = 846

Second check: 846 − 578 = 268

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Column additions with 268

ExampleSum
389 + 268657
402 + 268670
427 + 268695
432 + 268700
453 + 268721
468 + 268736
485 + 268753
519 + 268787
532 + 268800
536 + 268804
564 + 268832
578 + 268846
602 + 268870
632 + 268900
647 + 268915
683 + 268951
732 + 2681,000
1,732 + 2682,000
4,732 + 2685,000
9,732 + 26810,000

FAQ

What is 578 + 268?

578 + 268 = 846

How do you check that 578 + 268 = 846?

Subtract one addend from the sum: 846 − 268 = 578, and 846 − 578 = 268. Getting the other addend back means the sum is right.

How many carries are there in 578 + 268?

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 268 + 578 the same as 578 + 268?

Yes. Addition is commutative, so both give 846; the column looks the same with either number on top.

See Also