Subtraction with Regrouping: 721 − 268

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 721 − 268?

Answer

721 − 268 =
453

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

721 − 268 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.
611+10
7(was 7, now 6)2(was 2, now 11)1 (was 1, now 11)
−268
453

Column by column: 721 − 268

  • Ones: 1 is less than 8 — borrow 1 ten: tens 2 → 1; 11 − 8 = 3 — write 3.
  • Tens: after borrowing, 1; 1 is less than 6 — borrow 1 hundred: hundreds 7 → 6; 11 − 6 = 5 — write 5.
  • Hundreds: after borrowing, 6; 6 − 2 = 4 — write 4.

721 − 268 = 453

Second check: 721 − 453 = 268

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Column subtractions of 268

ExampleDifference
559 − 268291
575 − 268307
593 − 268325
616 − 268348
622 − 268354
644 − 268376
657 − 268389
670 − 268402
695 − 268427
700 − 268432
721 − 268453
736 − 268468
753 − 268485
787 − 268519
800 − 268532
804 − 268536
832 − 268564
846 − 268578
870 − 268602
900 − 268632

FAQ

What is 721 − 268?

721 − 268 = 453

How do you check that 721 − 268 = 453?

Add the difference and the subtrahend: 453 + 268 = 721. Getting the minuend back means the difference is right.

How many times do you borrow in 721 − 268?

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

See Also