Subtraction with Regrouping: 915 − 268

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 915 − 268?

Answer

915 − 268 =
647

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

915 − 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.
810+10
9(was 9, now 8)1(was 1, now 10)5 (was 5, now 15)
−268
647

Column by column: 915 − 268

  • Ones: 5 is less than 8 — borrow 1 ten: tens 1 → 0; 15 − 8 = 7 — write 7.
  • Tens: after borrowing, 0; 0 is less than 6 — borrow 1 hundred: hundreds 9 → 8; 10 − 6 = 4 — write 4.
  • Hundreds: after borrowing, 8; 8 − 2 = 6 — write 6.

915 − 268 = 647

Second check: 915 − 647 = 268

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Recalculate with different values ↑

Column subtractions of 268

ExampleDifference
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
915 − 268647
951 − 268683
1,000 − 268732
2,000 − 2681,732
5,000 − 2684,732
10,000 − 2689,732

FAQ

What is 915 − 268?

915 − 268 = 647

How do you check that 915 − 268 = 647?

Add the difference and the subtrahend: 647 + 268 = 915. Getting the minuend back means the difference is right.

How many times do you borrow in 915 − 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