Subtraction with Regrouping: 393 − 17

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 393 − 17?

Answer

393 − 17 =
376

With regrouping: 1 borrow — from the tens

393 − 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.
8+10
3 9(was 9, now 8)3 (was 3, now 13)
−17
376

Column by column: 393 − 17

  • Ones: 3 is less than 7 — borrow 1 ten: tens 9 → 8; 13 − 7 = 6 — write 6.
  • Tens: after borrowing, 8; 8 − 1 = 7 — write 7.
  • Hundreds: nothing to subtract — write 3.

393 − 17 = 376

Second check: 393 − 376 = 17

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Recalculate with different values ↑

Column subtractions of 17

ExampleDifference
109 − 1792
111 − 1794
115 − 1798
122 − 17105
153 − 17136
189 − 17172
200 − 17183
220 − 17203
256 − 17239
285 − 17268
300 − 17283
324 − 17307
365 − 17348
393 − 17376
419 − 17402
470 − 17453
502 − 17485
553 − 17536
595 − 17578
664 − 17647

FAQ

What is 393 − 17?

393 − 17 = 376

How do you check that 393 − 17 = 376?

Add the difference and the subtrahend: 376 + 17 = 393. Getting the minuend back means the difference is right.

How many times do you borrow in 393 − 17?

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

See Also