Subtraction with Regrouping: 300 − 23

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 300 − 23?

Answer

300 − 23 =
277

With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

300 − 23 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.
29+10
3(was 3, now 2)0(was 0, now 9)0 (was 0, now 10)
−23
277

Column by column: 300 − 23

  • Ones: 0 is less than 3 — borrow 1 hundred across the zero: hundreds 3 → 2, tens 0 → 9; 10 − 3 = 7 — write 7.
  • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
  • Hundreds: after borrowing, 2; nothing to subtract — write 2.

300 − 23 = 277

Second check: 300 − 277 = 23

Similar examples to practise

Related Calculations

See Also

Recalculate with different values ↑

Column subtractions of 23

ExampleDifference
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
399 − 23376
425 − 23402
476 − 23453
508 − 23485
559 − 23536
601 − 23578
670 − 23647

FAQ

What is 300 − 23?

300 − 23 = 277

How do you check that 300 − 23 = 277?

Add the difference and the subtrahend: 277 + 23 = 300. Getting the minuend back means the difference is right.

How many times do you borrow in 300 − 23?

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

Why does 0 become 9 when borrowing in 300 − 23?

The zero has nothing to lend, so it first borrows 1 from its left neighbour and becomes 10; then it lends 1 to the column on its right and keeps 9.

See Also