Subtraction with Regrouping: 628 − 239

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 628 − 239?

Answer

628 − 239 =
389

With regrouping: 2 borrows — from the tens and the hundreds

628 − 239 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.
511+10
6(was 6, now 5)2(was 2, now 11)8 (was 8, now 18)
−239
389

Column by column: 628 − 239

  • Ones: 8 is less than 9 — borrow 1 ten: tens 2 → 1; 18 − 9 = 9 — write 9.
  • Tens: after borrowing, 1; 1 is less than 3 — borrow 1 hundred: hundreds 6 → 5; 11 − 3 = 8 — write 8.
  • Hundreds: after borrowing, 5; 5 − 2 = 3 — write 3.

628 − 239 = 389

Second check: 628 − 389 = 239

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478 − 239239
495 − 239256
507 − 239268
530 − 239291
546 − 239307
564 − 239325
587 − 239348
593 − 239354
615 − 239376
628 − 239389
641 − 239402
666 − 239427
692 − 239453
707 − 239468
724 − 239485
758 − 239519
775 − 239536
803 − 239564
817 − 239578
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FAQ

What is 628 − 239?

628 − 239 = 389

How do you check that 628 − 239 = 389?

Add the difference and the subtrahend: 389 + 239 = 628. Getting the minuend back means the difference is right.

How many times do you borrow in 628 − 239?

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

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