Subtraction with Regrouping: 256 − 128

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 256 − 128?

Answer

256 − 128 =
128

With regrouping: 1 borrow — from the tens

256 − 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
2 5(was 5, now 4)6 (was 6, now 16)
−128
128

Column by column: 256 − 128

  • Ones: 6 is less than 8 — borrow 1 ten: tens 5 → 4; 16 − 8 = 8 — write 8.
  • Tens: after borrowing, 4; 4 − 2 = 2 — write 2.
  • Hundreds: 2 − 1 = 1 — write 1.

256 − 128 = 128

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Recalculate with different values ↑

Column subtractions of 128

ExampleDifference
256 − 128128
264 − 128136
277 − 128149
300 − 128172
315 − 128187
331 − 128203
342 − 128214
367 − 128239
384 − 128256
396 − 128268
419 − 128291
435 − 128307
453 − 128325
476 − 128348
482 − 128354
504 − 128376
517 − 128389
530 − 128402
555 − 128427
581 − 128453

FAQ

What is 256 − 128?

256 − 128 = 128

How do you check that 256 − 128 = 128?

Add the difference and the subtrahend: 128 + 128 = 256. Getting the minuend back means the difference is right.

How many times do you borrow in 256 − 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