Addition with Regrouping: 9,422 + 578

Addition with Regrouping Calculator
First addend
Second addend

What is 9,422 + 578?

Answer

9,422 + 578 =
10,000

The sum is longer than the addends: 4 carries — into every column from the tens to the ten thousands; the last one makes a new digit

9,422 + 578 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry1carry
9 4 2 2
+578
10000

Column by column: 9,422 + 578

  • Ones: 2 + 8 = 10 — write 0, carry 1.
  • Tens: 2 + 7 + 1 = 10 — write 0, carry 1.
  • Hundreds: 4 + 5 + 1 = 10 — write 0, carry 1.
  • Thousands: 9 + 1 = 10 — write 0, carry 1.
  • Ten thousands: the carried 1 — write 1.

9,422 + 578 = 10,000

Second check: 10,000 − 9,422 = 578

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Column additions with 578

ExampleSum
9,417 + 5789,995
9,418 + 5789,996
9,419 + 5789,997
9,420 + 5789,998
9,421 + 5789,999
9,422 + 57810,000
9,423 + 57810,001
9,424 + 57810,002
9,425 + 57810,003
9,426 + 57810,004
9,427 + 57810,005

FAQ

What is 9,422 + 578?

9,422 + 578 = 10,000

How do you check that 9,422 + 578 = 10,000?

Subtract one addend from the sum: 10,000 − 578 = 9,422, and 10,000 − 9,422 = 578. Getting the other addend back means the sum is right.

How many carries are there in 9,422 + 578?

4 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 578 + 9,422 the same as 9,422 + 578?

Yes. Addition is commutative, so both give 10,000; the column looks the same with either number on top.

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