Subtraction with Regrouping: 508 − 23

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 508 − 23?

Answer

508 − 23 =
485

With regrouping: 1 borrow — from the hundreds

508 − 23 in a column. Above the columns: the values after borrowing — a crossed-out digit is replaced by the number above it; +10 marks a column that received a borrowed ten.
4+10
5(was 5, now 4)0 (was 0, now 10)8
−23
485

Column by column: 508 − 23

  • Ones: 8 − 3 = 5 — write 5.
  • Tens: 0 is less than 2 — borrow 1 hundred: hundreds 5 → 4; 10 − 2 = 8 — write 8.
  • Hundreds: after borrowing, 4; nothing to subtract — write 4.

508 − 23 = 485

Second check: 508 − 485 = 23

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Recalculate with different values ↑

Column subtractions of 23

ExampleDifference
200 − 23177
226 − 23203
262 − 23239
291 − 23268
300 − 23277
330 − 23307
371 − 23348
399 − 23376
425 − 23402
476 − 23453
508 − 23485
559 − 23536
601 − 23578
670 − 23647
700 − 23677
800 − 23777
900 − 23877
1,000 − 23977
2,000 − 231,977
5,000 − 234,977

FAQ

What is 508 − 23?

508 − 23 = 485

How do you check that 508 − 23 = 485?

Add the difference and the subtrahend: 485 + 23 = 508. Getting the minuend back means the difference is right.

How many times do you borrow in 508 − 23?

1 borrow: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.

See Also