Subtraction with Regrouping: 128 − 63

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 128 − 63?

Answer

128 − 63 =
65

With regrouping: 1 borrow — from the hundreds

128 − 63 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.
0+10
1(was 1, now 0)2 (was 2, now 12)8
−63
65

Column by column: 128 − 63

  • Ones: 8 − 3 = 5 — write 5.
  • Tens: 2 is less than 6 — borrow 1 hundred: hundreds 1 → 0; 12 − 6 = 6 — write 6.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

128 − 63 = 65

Second check: 128 − 65 = 63

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Recalculate with different values ↑

Column subtractions of 63

ExampleDifference
126 − 6363
128 − 6365
130 − 6367
132 − 6369
134 − 6371
137 − 6374
139 − 6376
141 − 6378
146 − 6383
148 − 6385
152 − 6389
155 − 6392
157 − 6394
161 − 6398
168 − 63105
199 − 63136
200 − 63137
235 − 63172
266 − 63203
300 − 63237

FAQ

What is 128 − 63?

128 − 63 = 65

How do you check that 128 − 63 = 65?

Add the difference and the subtrahend: 65 + 63 = 128. Getting the minuend back means the difference is right.

How many times do you borrow in 128 − 63?

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