Column Subtraction: 399 − 23

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 399 − 23?

Answer

399 − 23 =
376

No regrouping: each column is subtracted on its own

399 − 23 in a column. No borrowing.
3 9 9
−23
376

Column by column: 399 − 23

  • Ones: 9 − 3 = 6 — write 6.
  • Tens: 9 − 2 = 7 — write 7.
  • Hundreds: nothing to subtract — write 3.

399 − 23 = 376

Second check: 399 − 376 = 23

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FAQ

What is 399 − 23?

399 − 23 = 376

How do you check that 399 − 23 = 376?

Add the difference and the subtrahend: 376 + 23 = 399. Getting the minuend back means the difference is right.

How many times do you borrow in 399 − 23?

Not once: every top digit is at least as large as the digit below it.