Subtraction with Regrouping: 328 − 89

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 328 − 89?

Answer

328 − 89 =
239

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

328 − 89 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.
211+10
3(was 3, now 2)2(was 2, now 11)8 (was 8, now 18)
−89
239

Column by column: 328 − 89

  • Ones: 8 is less than 9 — borrow 1 ten: tens 2 → 1; 18 − 9 = 9 — write 9.
  • Tens: after borrowing, 1; 1 is less than 8 — borrow 1 hundred: hundreds 3 → 2; 11 − 8 = 3 — write 3.
  • Hundreds: after borrowing, 2; nothing to subtract — write 2.

328 − 89 = 239

Second check: 328 − 239 = 89

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See Also

FAQ

What is 328 − 89?

328 − 89 = 239

How do you check that 328 − 89 = 239?

Add the difference and the subtrahend: 239 + 89 = 328. Getting the minuend back means the difference is right.

How many times do you borrow in 328 − 89?

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