Subtraction with Regrouping: 261 − 89

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 261 − 89?

Answer

261 − 89 =
172

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

261 − 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.
115+10
2(was 2, now 1)6(was 6, now 15)1 (was 1, now 11)
−89
172

Column by column: 261 − 89

  • Ones: 1 is less than 9 — borrow 1 ten: tens 6 → 5; 11 − 9 = 2 — write 2.
  • Tens: after borrowing, 5; 5 is less than 8 — borrow 1 hundred: hundreds 2 → 1; 15 − 8 = 7 — write 7.
  • Hundreds: after borrowing, 1; nothing to subtract — write 1.

261 − 89 = 172

Second check: 261 − 172 = 89

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See Also

FAQ

What is 261 − 89?

261 − 89 = 172

How do you check that 261 − 89 = 172?

Add the difference and the subtrahend: 172 + 89 = 261. Getting the minuend back means the difference is right.

How many times do you borrow in 261 − 89?

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