Subtraction with Regrouping: 131 − 39

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 131 − 39?

Answer

131 − 39 =
92

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

131 − 39 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.
012+10
1(was 1, now 0)3(was 3, now 12)1 (was 1, now 11)
−39
92

Column by column: 131 − 39

  • Ones: 1 is less than 9 — borrow 1 ten: tens 3 → 2; 11 − 9 = 2 — write 2.
  • Tens: after borrowing, 2; 2 is less than 3 — borrow 1 hundred: hundreds 1 → 0; 12 − 3 = 9 — write 9.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

131 − 39 = 92

Second check: 131 − 92 = 39

Similar examples to practise

See Also

FAQ

What is 131 − 39?

131 − 39 = 92

How do you check that 131 − 39 = 92?

Add the difference and the subtrahend: 92 + 39 = 131. Getting the minuend back means the difference is right.

How many times do you borrow in 131 − 39?

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