Subtraction with Regrouping: 172 − 67

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 172 − 67?

Answer

172 − 67 =
105

With regrouping: 1 borrow — from the tens

172 − 67 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
1 7(was 7, now 6)2 (was 2, now 12)
−67
105

Column by column: 172 − 67

  • Ones: 2 is less than 7 — borrow 1 ten: tens 7 → 6; 12 − 7 = 5 — write 5.
  • Tens: after borrowing, 6; 6 − 6 = 0 — write 0.
  • Hundreds: nothing to subtract — write 1.

172 − 67 = 105

Second check: 172 − 105 = 67

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See Also

FAQ

What is 172 − 67?

172 − 67 = 105

How do you check that 172 − 67 = 105?

Add the difference and the subtrahend: 105 + 67 = 172. Getting the minuend back means the difference is right.

How many times do you borrow in 172 − 67?

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