Subtraction with Regrouping: 804 − 268

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 804 − 268?

Answer

804 − 268 =
536

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

804 − 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.
79+10
8(was 8, now 7)0(was 0, now 9)4 (was 4, now 14)
−268
536

Column by column: 804 − 268

  • Ones: 4 is less than 8 — borrow 1 hundred across the zero: hundreds 8 → 7, tens 0 → 9; 14 − 8 = 6 — write 6.
  • Tens: after borrowing, 9; 9 − 6 = 3 — write 3.
  • Hundreds: after borrowing, 7; 7 − 2 = 5 — write 5.

804 − 268 = 536

Second check: 804 − 536 = 268

Similar examples to practise

See Also

FAQ

What is 804 − 268?

804 − 268 = 536

How do you check that 804 − 268 = 536?

Add the difference and the subtrahend: 536 + 268 = 804. Getting the minuend back means the difference is right.

How many times do you borrow in 804 − 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 804 − 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.