Subtraction with Regrouping: 339 − 71

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 339 − 71?

Answer

339 − 71 =
268

With regrouping: 1 borrow — from the hundreds

339 − 71 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.
2+10
3(was 3, now 2)3 (was 3, now 13)9
−71
268

Column by column: 339 − 71

  • Ones: 9 − 1 = 8 — write 8.
  • Tens: 3 is less than 7 — borrow 1 hundred: hundreds 3 → 2; 13 − 7 = 6 — write 6.
  • Hundreds: after borrowing, 2; nothing to subtract — write 2.

339 − 71 = 268

Second check: 339 − 268 = 71

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See Also

FAQ

What is 339 − 71?

339 − 71 = 268

How do you check that 339 − 71 = 268?

Add the difference and the subtrahend: 268 + 71 = 339. Getting the minuend back means the difference is right.

How many times do you borrow in 339 − 71?

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