Subtraction with Regrouping: 71 − 17

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 71 − 17?

Answer

71 − 17 =
54

With regrouping: 1 borrow — from the tens

71 − 17 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
7(was 7, now 6)1 (was 1, now 11)
−17
54

Column by column: 71 − 17

  • Ones: 1 is less than 7 — borrow 1 ten: tens 7 → 6; 11 − 7 = 4 — write 4.
  • Tens: after borrowing, 6; 6 − 1 = 5 — write 5.

71 − 17 = 54

Second check: 71 − 54 = 17

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FAQ

What is 71 − 17?

71 − 17 = 54

How do you check that 71 − 17 = 54?

Add the difference and the subtrahend: 54 + 17 = 71. Getting the minuend back means the difference is right.

How many times do you borrow in 71 − 17?

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