Subtraction with Regrouping: 900 − 268

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 900 − 268?

Answer

900 − 268 =
632

With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

900 − 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.
89+10
9(was 9, now 8)0(was 0, now 9)0 (was 0, now 10)
−268
632

Column by column: 900 − 268

  • Ones: 0 is less than 8 — borrow 1 hundred across the zero: hundreds 9 → 8, tens 0 → 9; 10 − 8 = 2 — write 2.
  • Tens: after borrowing, 9; 9 − 6 = 3 — write 3.
  • Hundreds: after borrowing, 8; 8 − 2 = 6 — write 6.

900 − 268 = 632

Second check: 900 − 632 = 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 900 − 268?

900 − 268 = 632

How do you check that 900 − 268 = 632?

Add the difference and the subtrahend: 632 + 268 = 900. Getting the minuend back means the difference is right.

How many times do you borrow in 900 − 268?

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

Why does 0 become 9 when borrowing in 900 − 268?

The zero has nothing to lend, so it first borrows 1 from its left neighbour and becomes 10; then it lends 1 to the column on its right and keeps 9.

See Also