Addition with Regrouping: 4,977 + 23

Addition with Regrouping Calculator
First addend
Second addend

What is 4,977 + 23?

Answer

4,977 + 23 =
5,000

With regrouping: 3 carries — into the tens, the hundreds and the thousands

4,977 + 23 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
4 9 7 7
+23
5000

Column by column: 4,977 + 23

  • Ones: 7 + 3 = 10 — write 0, carry 1.
  • Tens: 7 + 2 + 1 = 10 — write 0, carry 1.
  • Hundreds: 9 + 1 = 10 — write 0, carry 1.
  • Thousands: 4 + 1 = 5 — write 5.

4,977 + 23 = 5,000

Second check: 5,000 − 4,977 = 23

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977 + 231,000
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4,977 + 235,000
9,977 + 2310,000

FAQ

What is 4,977 + 23?

4,977 + 23 = 5,000

How do you check that 4,977 + 23 = 5,000?

Subtract one addend from the sum: 5,000 − 23 = 4,977, and 5,000 − 4,977 = 23. Getting the other addend back means the sum is right.

How many carries are there in 4,977 + 23?

3 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 23 + 4,977 the same as 4,977 + 23?

Yes. Addition is commutative, so both give 5,000; the column looks the same with either number on top.

See Also