Subtraction with Regrouping: 903 − 325

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 903 − 325?

Answer

903 − 325 =
578

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

903 − 325 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)3 (was 3, now 13)
−325
578

Column by column: 903 − 325

  • Ones: 3 is less than 5 — borrow 1 hundred across the zero: hundreds 9 → 8, tens 0 → 9; 13 − 5 = 8 — write 8.
  • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
  • Hundreds: after borrowing, 8; 8 − 3 = 5 — write 5.

903 − 325 = 578

Second check: 903 − 578 = 325

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Column subtractions of 325

ExampleDifference
650 − 325325
673 − 325348
679 − 325354
701 − 325376
714 − 325389
727 − 325402
752 − 325427
778 − 325453
793 − 325468
810 − 325485
844 − 325519
861 − 325536
889 − 325564
903 − 325578
927 − 325602
972 − 325647
1,008 − 325683

FAQ

What is 903 − 325?

903 − 325 = 578

How do you check that 903 − 325 = 578?

Add the difference and the subtrahend: 578 + 325 = 903. Getting the minuend back means the difference is right.

How many times do you borrow in 903 − 325?

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 903 − 325?

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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