Subtraction with Regrouping: 662 − 15

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 662 − 15?

Answer

662 − 15 =
647

With regrouping: 1 borrow — from the tens

662 − 15 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.
5+10
6 6(was 6, now 5)2 (was 2, now 12)
−15
647

Column by column: 662 − 15

  • Ones: 2 is less than 5 — borrow 1 ten: tens 6 → 5; 12 − 5 = 7 — write 7.
  • Tens: after borrowing, 5; 5 − 1 = 4 — write 4.
  • Hundreds: nothing to subtract — write 6.

662 − 15 = 647

Second check: 662 − 647 = 15

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Column subtractions of 15

ExampleDifference
100 − 1585
104 − 1589
107 − 1592
109 − 1594
113 − 1598
120 − 15105
151 − 15136
187 − 15172
218 − 15203
254 − 15239
283 − 15268
322 − 15307
363 − 15348
391 − 15376
417 − 15402
468 − 15453
500 − 15485
551 − 15536
593 − 15578
662 − 15647

FAQ

What is 662 − 15?

662 − 15 = 647

How do you check that 662 − 15 = 647?

Add the difference and the subtrahend: 647 + 15 = 662. Getting the minuend back means the difference is right.

How many times do you borrow in 662 − 15?

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