Subtraction with Regrouping: 555 − 128

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 555 − 128?

Answer

555 − 128 =
427

With regrouping: 1 borrow — from the tens

555 − 128 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 5(was 5, now 4)5 (was 5, now 15)
−128
427

Column by column: 555 − 128

  • Ones: 5 is less than 8 — borrow 1 ten: tens 5 → 4; 15 − 8 = 7 — write 7.
  • Tens: after borrowing, 4; 4 − 2 = 2 — write 2.
  • Hundreds: 5 − 1 = 4 — write 4.

555 − 128 = 427

Second check: 555 − 427 = 128

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Column subtractions of 128

ExampleDifference
384 − 128256
396 − 128268
419 − 128291
435 − 128307
453 − 128325
476 − 128348
482 − 128354
504 − 128376
517 − 128389
530 − 128402
555 − 128427
581 − 128453
596 − 128468
613 − 128485
647 − 128519
664 − 128536
692 − 128564
706 − 128578
730 − 128602
775 − 128647

FAQ

What is 555 − 128?

555 − 128 = 427

How do you check that 555 − 128 = 427?

Add the difference and the subtrahend: 427 + 128 = 555. Getting the minuend back means the difference is right.

How many times do you borrow in 555 − 128?

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