Subtraction with Regrouping: 179 − 85

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 179 − 85?

Answer

179 − 85 =
94

With regrouping: 1 borrow — from the hundreds

179 − 85 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.
0+10
1(was 1, now 0)7 (was 7, now 17)9
−85
94

Column by column: 179 − 85

  • Ones: 9 − 5 = 4 — write 4.
  • Tens: 7 is less than 8 — borrow 1 hundred: hundreds 1 → 0; 17 − 8 = 9 — write 9.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

179 − 85 = 94

Second check: 179 − 94 = 85

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See Also

FAQ

What is 179 − 85?

179 − 85 = 94

How do you check that 179 − 85 = 94?

Add the difference and the subtrahend: 94 + 85 = 179. Getting the minuend back means the difference is right.

How many times do you borrow in 179 − 85?

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