Subtraction with Regrouping: 1,023 − 376

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 1,023 − 376?

Answer

1,023 − 376 =
647

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

1,023 − 376 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.
0911+10
1(was 1, now 0)0(was 0, now 9)2(was 2, now 11)3 (was 3, now 13)
−376
647

Column by column: 1,023 − 376

  • Ones: 3 is less than 6 — borrow 1 ten: tens 2 → 1; 13 − 6 = 7 — write 7.
  • Tens: after borrowing, 1; 1 is less than 7 — borrow 1 thousand across the zero: thousands 1 → 0, hundreds 0 → 9; 11 − 7 = 4 — write 4.
  • Hundreds: after borrowing, 9; 9 − 3 = 6 — write 6.
  • Thousands: after borrowing, 0 — a leading zero is not written.

1,023 − 376 = 647

Second check: 1,023 − 647 = 376

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Recalculate with different values ↑

Column subtractions of 376

ExampleDifference
1,018 − 376642
1,019 − 376643
1,020 − 376644
1,021 − 376645
1,022 − 376646
1,023 − 376647
1,024 − 376648
1,025 − 376649
1,026 − 376650
1,027 − 376651
1,028 − 376652

FAQ

What is 1,023 − 376?

1,023 − 376 = 647

How do you check that 1,023 − 376 = 647?

Add the difference and the subtrahend: 647 + 376 = 1,023. Getting the minuend back means the difference is right.

How many times do you borrow in 1,023 − 376?

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 1,023 − 376?

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