Subtraction with Regrouping: 820 − 256

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 820 − 256?

Answer

820 − 256 =
564

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

820 − 256 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.
711+10
8(was 8, now 7)2(was 2, now 11)0 (was 0, now 10)
−256
564

Column by column: 820 − 256

  • Ones: 0 is less than 6 — borrow 1 ten: tens 2 → 1; 10 − 6 = 4 — write 4.
  • Tens: after borrowing, 1; 1 is less than 5 — borrow 1 hundred: hundreds 8 → 7; 11 − 5 = 6 — write 6.
  • Hundreds: after borrowing, 7; 7 − 2 = 5 — write 5.

820 − 256 = 564

Second check: 820 − 564 = 256

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FAQ

What is 820 − 256?

820 − 256 = 564

How do you check that 820 − 256 = 564?

Add the difference and the subtrahend: 564 + 256 = 820. Getting the minuend back means the difference is right.

How many times do you borrow in 820 − 256?

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