Addition with Regrouping: 468 + 402

Addition with Regrouping Calculator
First addend
Second addend

What is 468 + 402?

Answer

468 + 402 =
870

With regrouping: 1 carry — into the tens

468 + 402 in a column. Carries are the small circled digits above the columns.
1carry
4 6 8
+402
870

Column by column: 468 + 402

  • Ones: 8 + 2 = 10 — write 0, carry 1.
  • Tens: 6 + 0 + 1 = 7 — write 7.
  • Hundreds: 4 + 4 = 8 — write 8.

468 + 402 = 870

Second check: 870 − 468 = 402

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FAQ

What is 468 + 402?

468 + 402 = 870

How do you check that 468 + 402 = 870?

Subtract one addend from the sum: 870 − 402 = 468, and 870 − 468 = 402. Getting the other addend back means the sum is right.

How many carries are there in 468 + 402?

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 402 + 468 the same as 468 + 402?

Yes. Addition is commutative, so both give 870; the column looks the same with either number on top.