Subtraction with Regrouping: 390 − 83

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 390 − 83?

Answer

390 − 83 =
307

With regrouping: 1 borrow — from the tens

390 − 83 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)0 (was 0, now 10)
−83
307

Column by column: 390 − 83

  • Ones: 0 is less than 3 — borrow 1 ten: tens 9 → 8; 10 − 3 = 7 — write 7.
  • Tens: after borrowing, 8; 8 − 8 = 0 — write 0.
  • Hundreds: nothing to subtract — write 3.

390 − 83 = 307

Second check: 390 − 307 = 83

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Recalculate with different values ↑

Column subtractions of 83

ExampleDifference
177 − 8394
181 − 8398
188 − 83105
200 − 83117
219 − 83136
255 − 83172
286 − 83203
300 − 83217
322 − 83239
351 − 83268
390 − 83307
400 − 83317
431 − 83348
459 − 83376
485 − 83402
500 − 83417
536 − 83453
568 − 83485
600 − 83517
619 − 83536

FAQ

What is 390 − 83?

390 − 83 = 307

How do you check that 390 − 83 = 307?

Add the difference and the subtrahend: 307 + 83 = 390. Getting the minuend back means the difference is right.

How many times do you borrow in 390 − 83?

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

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