Column Subtraction: 128 − 23

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 128 − 23?

Answer

128 − 23 =
105

No regrouping: each column is subtracted on its own

128 − 23 in a column. No borrowing.
1 2 8
−23
105

Column by column: 128 − 23

  • Ones: 8 − 3 = 5 — write 5.
  • Tens: 2 − 2 = 0 — write 0.
  • Hundreds: nothing to subtract — write 1.

128 − 23 = 105

Second check: 128 − 105 = 23

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Recalculate with different values ↑

Column subtractions of 23

ExampleDifference
97 − 2374
99 − 2376
100 − 2377
101 − 2378
106 − 2383
108 − 2385
112 − 2389
115 − 2392
117 − 2394
121 − 2398
128 − 23105
159 − 23136
195 − 23172
200 − 23177
226 − 23203
262 − 23239
291 − 23268
300 − 23277
330 − 23307
371 − 23348

FAQ

What is 128 − 23?

128 − 23 = 105

How do you check that 128 − 23 = 105?

Add the difference and the subtrahend: 105 + 23 = 128. Getting the minuend back means the difference is right.

How many times do you borrow in 128 − 23?

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

See Also