Subtraction with Regrouping: 73 − 15

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 73 − 15?

Answer

73 − 15 =
58

With regrouping: 1 borrow — from the tens

73 − 15 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)3 (was 3, now 13)
−15
58

Column by column: 73 − 15

  • Ones: 3 is less than 5 — borrow 1 ten: tens 7 → 6; 13 − 5 = 8 — write 8.
  • Tens: after borrowing, 6; 6 − 1 = 5 — write 5.

73 − 15 = 58

Second check: 73 − 58 = 15

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FAQ

What is 73 − 15?

73 − 15 = 58

How do you check that 73 − 15 = 58?

Add the difference and the subtrahend: 58 + 15 = 73. Getting the minuend back means the difference is right.

How many times do you borrow in 73 − 15?

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