Subtraction with Regrouping: 1,063 − 485

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 1,063 − 485?

Answer

1,063 − 485 =
578

With regrouping across a zero: 3 borrows — there are no hundreds to borrow from, so 1 thousand becomes 10 hundreds, and 1 hundred goes to the tens

1,063 − 485 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.
0915+10
1(was 1, now 0)0(was 0, now 9)6(was 6, now 15)3 (was 3, now 13)
−485
578

Column by column: 1,063 − 485

  • Ones: 3 is less than 5 — borrow 1 ten: tens 6 → 5; 13 − 5 = 8 — write 8.
  • Tens: after borrowing, 5; 5 is less than 8 — borrow 1 thousand across the zero: thousands 1 → 0, hundreds 0 → 9; 15 − 8 = 7 — write 7.
  • Hundreds: after borrowing, 9; 9 − 4 = 5 — write 5.
  • Thousands: after borrowing, 0 — a leading zero is not written.

1,063 − 485 = 578

Second check: 1,063 − 578 = 485

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Column subtractions of 485

ExampleDifference
1,058 − 485573
1,059 − 485574
1,060 − 485575
1,061 − 485576
1,062 − 485577
1,063 − 485578
1,064 − 485579
1,065 − 485580
1,066 − 485581
1,067 − 485582
1,068 − 485583

FAQ

What is 1,063 − 485?

1,063 − 485 = 578

How do you check that 1,063 − 485 = 578?

Add the difference and the subtrahend: 578 + 485 = 1,063. Getting the minuend back means the difference is right.

How many times do you borrow in 1,063 − 485?

3 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 1,063 − 485?

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.

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