Subtraction with Regrouping: 478 − 239

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 478 − 239?

Answer

478 − 239 =
239

With regrouping: 1 borrow — from the tens

478 − 239 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.
6+10
4 7(was 7, now 6)8 (was 8, now 18)
−239
239

Column by column: 478 − 239

  • Ones: 8 is less than 9 — borrow 1 ten: tens 7 → 6; 18 − 9 = 9 — write 9.
  • Tens: after borrowing, 6; 6 − 3 = 3 — write 3.
  • Hundreds: 4 − 2 = 2 — write 2.

478 − 239 = 239

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See Also

FAQ

What is 478 − 239?

478 − 239 = 239

How do you check that 478 − 239 = 239?

Add the difference and the subtrahend: 239 + 239 = 478. Getting the minuend back means the difference is right.

How many times do you borrow in 478 − 239?

1 borrow: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.