Subtraction with Regrouping: 342 − 128

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 342 − 128?

Answer

342 − 128 =
214

With regrouping: 1 borrow — from the tens

342 − 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.
3+10
3 4(was 4, now 3)2 (was 2, now 12)
−128
214

Column by column: 342 − 128

  • Ones: 2 is less than 8 — borrow 1 ten: tens 4 → 3; 12 − 8 = 4 — write 4.
  • Tens: after borrowing, 3; 3 − 2 = 1 — write 1.
  • Hundreds: 3 − 1 = 2 — write 2.

342 − 128 = 214

Second check: 342 − 214 = 128

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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 342 − 128?

342 − 128 = 214

How do you check that 342 − 128 = 214?

Add the difference and the subtrahend: 214 + 128 = 342. Getting the minuend back means the difference is right.

How many times do you borrow in 342 − 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